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Vulnerability record · CVE-2020-1712 · published 31 March 2020

CVE-2020-1712: Systemd project systemd use after free vulnerability

Systemd Project · Systemd

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.

7.8 CVSS 3.1 High EPSS 0.46% · top 63.0% CWE-416 · Use after free
7.8CVSS 3.1 base score, v2 4.6
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.

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

Affected products

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

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue TrackingPatchThird Party Advisory
https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 PatchThird Party Advisory
https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb PatchThird Party Advisory
https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d PatchThird Party Advisory
https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing ListPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 Issue TrackingPatchThird Party Advisory
https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 PatchThird Party Advisory
https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb PatchThird Party Advisory
https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d PatchThird Party Advisory
https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2020/02/05/1 Mailing ListPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-1712), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.