Vulnerability record · CVE-2023-31439 · published 13 June 2023

CVE-2023-31439: Systemd project systemd vulnerability

Systemd Project · Systemd

An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."

5.3 CVSS 3.1 Medium EPSS 0.35% · top 74.0% CWE-354 · CWE-354

5.3CVSS 3.1 base score

0.35%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

17 Jun 2026Last modified by NVD

Description

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

Affected products

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

Systemd Systemd Project

References

Link	Tags
https://github.com/kastel-security/Journald	PatchThird Party Advisory
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf	Technical Description
https://github.com/systemd/systemd/pull/28885
https://github.com/systemd/systemd/releases	Release Notes
https://github.com/kastel-security/Journald	PatchThird Party Advisory
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf	Technical Description
https://github.com/systemd/systemd/pull/28885
https://github.com/systemd/systemd/releases	Release Notes

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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-2023-31439), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.