CVE-2026-84120 Affecting libfreebl3 package, versions <3.125-150400.3.74.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-SLES155-LIBFREEBL3-19863495
  • published16 Sept 2026
  • disclosed14 Sept 2026

Introduced: 14 Sep 2026

CVE-2026-84120  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 libfreebl3 to version 3.125-150400.3.74.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libfreebl3 package and not the libfreebl3 package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

CVSS Base Scores

version 3.1