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Vulnerability details: VCID-7mtw-85gb-vyfz
Vulnerability ID VCID-7mtw-85gb-vyfz
Aliases CVE-2021-33910
Summary Multiple vulnerabilities have been found in systemd, the worst of which could result in a Denial of Service condition.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3.1 5.5 http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
ssvc Track http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33910.json
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
epss 0.00044 https://api.first.org/data/v1/epss?cve=CVE-2021-33910
cvssv3.1 5.5 https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
ssvc Track https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.5 https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
ssvc Track https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
cvssv3.1 5.5 https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
ssvc Track https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
cvssv3.1 5.5 https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
ssvc Track https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
cvssv3.1 5.5 https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
ssvc Track https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
cvssv3.1 5.5 https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
ssvc Track https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
cvssv3.1 5.5 https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
ssvc Track https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
cvssv3.1 5.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
cvssv3.1 5.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
archlinux Medium https://security.archlinux.org/AVG-2179
cvssv3.1 5.5 https://security.gentoo.org/glsa/202107-48
ssvc Track https://security.gentoo.org/glsa/202107-48
cvssv3.1 5.5 https://security.netapp.com/advisory/ntap-20211104-0008/
ssvc Track https://security.netapp.com/advisory/ntap-20211104-0008/
cvssv3.1 5.5 https://www.debian.org/security/2021/dsa-4942
ssvc Track https://www.debian.org/security/2021/dsa-4942
cvssv3.1 5.5 https://www.openwall.com/lists/oss-security/2021/07/20/2
ssvc Track https://www.openwall.com/lists/oss-security/2021/07/20/2
cvssv3.1 5.5 http://www.openwall.com/lists/oss-security/2021/08/04/2
ssvc Track http://www.openwall.com/lists/oss-security/2021/08/04/2
cvssv3.1 5.5 http://www.openwall.com/lists/oss-security/2021/08/17/3
ssvc Track http://www.openwall.com/lists/oss-security/2021/08/17/3
cvssv3.1 5.5 http://www.openwall.com/lists/oss-security/2021/09/07/3
ssvc Track http://www.openwall.com/lists/oss-security/2021/09/07/3
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33910.json
https://api.first.org/data/v1/epss?cve=CVE-2021-33910
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33910
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1970887 https://bugzilla.redhat.com/show_bug.cgi?id=1970887
2 https://www.openwall.com/lists/oss-security/2021/07/20/2
2 http://www.openwall.com/lists/oss-security/2021/08/04/2
2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
3 http://www.openwall.com/lists/oss-security/2021/08/17/3
3 http://www.openwall.com/lists/oss-security/2021/09/07/3
42TMJVNYRY65B4QCJICBYOEIVZV3KUYI https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
441e0115646d54f080e5c3bb0ba477c892861ab9 https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
4a1c5f34bd3e1daed4490e9d97918e504d19733b https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
764b74113e36ac5219a4b82a05f311b5a92136ce https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
ASA-202107-57 https://security.archlinux.org/ASA-202107-57
AVG-2179 https://security.archlinux.org/AVG-2179
b00674347337b7531c92fdb65590ab253bb57538 https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
b34a4f0e6729de292cb3b0c03c1d48f246ad896b https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
cfd14c65374027b34dbbc4f0551456c5dc2d1f61 https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
dsa-4942 https://www.debian.org/security/2021/dsa-4942
GLSA-202107-48 https://security.gentoo.org/glsa/202107-48
ntap-20211104-0008 https://security.netapp.com/advisory/ntap-20211104-0008/
RHSA-2021:2717 https://access.redhat.com/errata/RHSA-2021:2717
RHSA-2021:2721 https://access.redhat.com/errata/RHSA-2021:2721
RHSA-2021:2724 https://access.redhat.com/errata/RHSA-2021:2724
RHSA-2021:2736 https://access.redhat.com/errata/RHSA-2021:2736
Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
USN-5013-1 https://usn.ubuntu.com/5013-1/
USN-5013-2 https://usn.ubuntu.com/5013-2/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33910.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

low

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required

unchanged

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low

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low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

changed

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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required

unchanged

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Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd/commit/b34a4f0e6729de292cb3b0c03c1d48f246ad896b
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd-stable/commit/4a1c5f34bd3e1daed4490e9d97918e504d19733b
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd-stable/commit/764b74113e36ac5219a4b82a05f311b5a92136ce
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd-stable/commit/b00674347337b7531c92fdb65590ab253bb57538
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

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low

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://github.com/systemd/systemd-stable/commit/cfd14c65374027b34dbbc4f0551456c5dc2d1f61
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

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high

low

none

high

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://security.gentoo.org/glsa/202107-48
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://security.gentoo.org/glsa/202107-48
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://security.netapp.com/advisory/ntap-20211104-0008/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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none

required

unchanged

changed

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://security.netapp.com/advisory/ntap-20211104-0008/
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://www.debian.org/security/2021/dsa-4942
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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none

required

unchanged

changed

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://www.debian.org/security/2021/dsa-4942
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://www.openwall.com/lists/oss-security/2021/07/20/2
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

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none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at https://www.openwall.com/lists/oss-security/2021/07/20/2
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2021/08/04/2
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at http://www.openwall.com/lists/oss-security/2021/08/04/2
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2021/08/17/3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

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low

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none

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at http://www.openwall.com/lists/oss-security/2021/08/17/3
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2021/09/07/3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:43:40Z/ Found at http://www.openwall.com/lists/oss-security/2021/09/07/3
Exploit Prediction Scoring System (EPSS)
Percentile 0.13482
EPSS Score 0.00044
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:02:36.739128+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202107-48 38.0.0