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Vulnerability record · CVE-2020-13776 · published 3 June 2020

CVE-2020-13776: Systemd project systemd improper privilege management vulnerability

Systemd Project · Systemd

systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

6.7 CVSS 3.1 Medium EPSS 0.46% · top 61.9% CWE-269 · Improper privilege management
6.7CVSS 3.1 base score, v2 6.2
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/systemd/systemd/issues/15985 Issue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWRO
https://security.netapp.com/advisory/ntap-20200611-0003/ Third Party Advisory
https://github.com/systemd/systemd/issues/15985 Issue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWRO
https://security.netapp.com/advisory/ntap-20200611-0003/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-13776), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.