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Advisory severityHigh7.5Red Hat Linux

High [CVE-2026-16360] Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153

This high-severity Red Hat Linux advisory covers CVE-2026-16360 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-16360 Source published Source updated

VulniPulse record published Record updated

CVE-2026-16360
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152. 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 was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-120.

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 10 more.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Fixed versions
  • 115.38
  • 140.13
  • firefox-0:140.13.0-1.el10_2
  • thunderbird-0:140.13.0-1.el10_2
  • thunderbird-0:140.13.0-1.el10_0
  • firefox-0:140.13.0-1.el10_0
  • firefox-0:140.13.0-1.el7_9
  • firefox-0:140.13.0-1.el8_10
  • thunderbird-0:140.13.0-1.el8_10
  • thunderbird-0:140.13.0-1.el8_4
  • firefox-0:140.13.0-1.el8_4
  • thunderbird-0:140.13.0-1.el8_6
  • firefox-0:140.13.0-1.el8_6
  • thunderbird-0:140.13.0-1.el8_8
  • firefox-0:140.13.0-1.el8_8
  • firefox-0:140.13.0-1.el9_8
  • thunderbird-0:140.13.0-1.el9_8
  • thunderbird-0:140.13.0-1.el9_2
  • firefox-0:140.13.0-1.el9_2
  • thunderbird-0:140.13.0-1.el9_4
  • firefox-0:140.13.0-1.el9_4
  • thunderbird-0:140.13.0-1.el9_6
  • firefox-0:140.13.0-1.el9_6
  • RHSA-2026:47101
  • RHSA-2026:49621
  • RHSA-2026:53445
  • RHSA-2026:54181
  • RHSA-2026:54248
  • RHSA-2026:47105
  • RHSA-2026:49922
  • RHSA-2026:53455
  • RHSA-2026:54180
  • RHSA-2026:53453
  • RHSA-2026:54259
  • RHSA-2026:53454
  • RHSA-2026:54339
  • RHSA-2026:47104
  • RHSA-2026:49921
  • RHSA-2026:53475
  • RHSA-2026:54185
  • RHSA-2026:53444
  • RHSA-2026:54182
  • RHSA-2026:53446

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Mitigation

Upgrade to a fixed release: 115.38, 140.13, firefox-0:140.13.0-1.el10_2, thunderbird-0:140.13.0-1.el10_2, thunderbird-0:140.13.0-1.el10_0, firefox-0:140.13.0-1.el10_0. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Discussion(0)

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