CVE-2020-1712

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

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2020-03-31

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• redhat:ceph_storage
• redhat:discovery
• redhat:enterprise_linux
• redhat:migration_toolkit
• redhat:openshift_container_platform
• systemd_project:systemd

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712
• https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54
• https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb
• https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d
• https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2

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