CVE-2025-9179

CRITICAL EPSS 40.7%
Published Aug 19, 202510mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
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Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
40.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety

Affected Products 7

VendorProductVersionRange
mozillafirefox* <115.27.0
mozillafirefox* <142.0
mozillafirefox*≥128.0  –  <128.14.0
mozillafirefox*≥140.0  –  <140.2.0
mozillathunderbird* <128.14.0
mozillathunderbird* <142.0
mozillathunderbird*≥140.0  –  <140.2.0

References 10

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1979527
    Issue TrackingPermissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-64/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-65/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-66/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-67/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-70/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-71/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-72/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.