CVE-2025-10537 Affecting firefox-x11 package, versions <0:140.3.0-1.el9_4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (14th percentile)

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  • Snyk IDSNYK-RHEL9-FIREFOXX11-13332863
  • published6 Oct 2025
  • disclosed16 Sept 2025

Introduced: 16 Sep 2025

CVE-2025-10537  (opens in a new tab)

How to fix?

Upgrade RHEL:9 firefox-x11 to version 0:140.3.0-1.el9_4 or higher.
This issue was patched in RHSA-2025:17378.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-x11 package and not the firefox-x11 package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

CVSS Base Scores

version 3.1