What is CVE-2026-86469?

CVE-2026-86469 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Link Resolution Before File Access. CVSS score: 5.3/10. Published 2026-09-07.

How severe is CVE-2026-86469?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Red Hat Enterprise Linux 10

CVE-2026-86469

A flaw was found in GLib2. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION and creating the .goutputstream-XXXXXX temporary file fails, the library unlinks the destination and recreates it without exclusive creation or symlink protection. A local attacker who can write to the destination directory can win that race and redirect the write to another file.

Published 2026-09-07 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.001 (3.1th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

Frequently asked questions

What is CVE-2026-86469?: CVE-2026-86469 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Link Resolution Before File Access. CVSS score: 5.3/10. Published 2026-09-07.
How severe is CVE-2026-86469?: Medium severity. CVSS v3 base score is 5.3 out of 10.