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Vulnerability details: VCID-w7ys-gs9d-m3f5
Vulnerability ID VCID-w7ys-gs9d-m3f5
Aliases CVE-2020-13776
Summary systemd: Mishandles numerical usernames beginning with decimal digits or 0x followed by hexadecimal digits
Status Published
Exploitability 0.5
Weighted Severity 6.0
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-440 Expected Behavior Violation
System Score Found at
cvssv3 6.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13776.json
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
epss 0.00137 https://api.first.org/data/v1/epss?cve=CVE-2020-13776
cvssv3.1 7.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.7 https://github.com/systemd/systemd/issues/15985
ssvc Track https://github.com/systemd/systemd/issues/15985
cvssv3.1 6.7 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/
cvssv3.1 6.7 https://security.netapp.com/advisory/ntap-20200611-0003/
ssvc Track https://security.netapp.com/advisory/ntap-20200611-0003/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13776.json
https://api.first.org/data/v1/epss?cve=CVE-2020-13776
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13776
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
15985 https://github.com/systemd/systemd/issues/15985
1845534 https://bugzilla.redhat.com/show_bug.cgi?id=1845534
IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/
ntap-20200611-0003 https://security.netapp.com/advisory/ntap-20200611-0003/
RHSA-2021:1611 https://access.redhat.com/errata/RHSA-2021:1611
RHSA-2021:3900 https://access.redhat.com/errata/RHSA-2021:3900
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13776.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:L/UI:N/S:U/C:H/I:H/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:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/systemd/systemd/issues/15985
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:T/P:M/B:A/M:M/D:T/2025-06-09T15:45:10Z/ Found at https://github.com/systemd/systemd/issues/15985
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/
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:T/P:M/B:A/M:M/D:T/2025-06-09T15:45:10Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://security.netapp.com/advisory/ntap-20200611-0003/
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:T/P:M/B:A/M:M/D:T/2025-06-09T15:45:10Z/ Found at https://security.netapp.com/advisory/ntap-20200611-0003/
Exploit Prediction Scoring System (EPSS)
Percentile 0.3341
EPSS Score 0.00137
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:06:42.622415+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13776.json 38.0.0