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Vulnerability details: VCID-8u7s-c7fs-6bgk
Vulnerability ID VCID-8u7s-c7fs-6bgk
Aliases CVE-2021-3326
Summary The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-617 Reachable Assertion
CWE-20 Improper Input Validation
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3326.json
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00093 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2021-3326
cvssv3.1 6.2 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
ssvc Track https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-3326
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-3326
archlinux Low https://security.archlinux.org/AVG-1320
cvssv3.1 7.5 https://security.gentoo.org/glsa/202107-07
ssvc Track https://security.gentoo.org/glsa/202107-07
cvssv3.1 7.5 https://security.netapp.com/advisory/ntap-20210304-0007/
ssvc Track https://security.netapp.com/advisory/ntap-20210304-0007/
cvssv3.1 7.5 https://sourceware.org/bugzilla/show_bug.cgi?id=27256
ssvc Track https://sourceware.org/bugzilla/show_bug.cgi?id=27256
cvssv3.1 7.5 https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
ssvc Track https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuapr2022.html
ssvc Track https://www.oracle.com/security-alerts/cpuapr2022.html
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpujan2022.html
ssvc Track https://www.oracle.com/security-alerts/cpujan2022.html
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2021/01/28/2
ssvc Track http://www.openwall.com/lists/oss-security/2021/01/28/2
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3326.json
https://api.first.org/data/v1/epss?cve=CVE-2021-3326
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3326
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
1921916 https://bugzilla.redhat.com/show_bug.cgi?id=1921916
2 http://www.openwall.com/lists/oss-security/2021/01/28/2
202107-07 https://security.gentoo.org/glsa/202107-07
981198 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981198
ASA-202102-16 https://security.archlinux.org/ASA-202102-16
ASA-202102-17 https://security.archlinux.org/ASA-202102-17
AVG-1320 https://security.archlinux.org/AVG-1320
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.5.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.5.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2021-3326 https://nvd.nist.gov/vuln/detail/CVE-2021-3326
msg00021.html https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
ntap-20210304-0007 https://security.netapp.com/advisory/ntap-20210304-0007/
?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888 https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
RHSA-2021:1585 https://access.redhat.com/errata/RHSA-2021:1585
show_bug.cgi?id=27256 https://sourceware.org/bugzilla/show_bug.cgi?id=27256
USN-5310-1 https://usn.ubuntu.com/5310-1/
USN-5699-1 https://usn.ubuntu.com/5699-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3326.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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/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

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2022/10/msg00021.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

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/2025-06-09T15:17:18Z/ Found at https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3326
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3326
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.gentoo.org/glsa/202107-07
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/2025-06-09T15:17:18Z/ Found at https://security.gentoo.org/glsa/202107-07
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.netapp.com/advisory/ntap-20210304-0007/
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/2025-06-09T15:17:18Z/ Found at https://security.netapp.com/advisory/ntap-20210304-0007/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://sourceware.org/bugzilla/show_bug.cgi?id=27256
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/2025-06-09T15:17:18Z/ Found at https://sourceware.org/bugzilla/show_bug.cgi?id=27256
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
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/2025-06-09T15:17:18Z/ Found at https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuapr2022.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

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/2025-06-09T15:17:18Z/ Found at https://www.oracle.com/security-alerts/cpuapr2022.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpujan2022.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

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/2025-06-09T15:17:18Z/ Found at https://www.oracle.com/security-alerts/cpujan2022.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2021/01/28/2
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

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-09T15:17:18Z/ Found at http://www.openwall.com/lists/oss-security/2021/01/28/2
Exploit Prediction Scoring System (EPSS)
Percentile 0.27212
EPSS Score 0.00093
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:34:33.204660+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/5699-1/ 37.0.0