CVE-2025-11711

MEDIUM EPSS 11.2%
Published Oct 14, 20258mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
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Published Oct 14, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
11.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-591

Affected Products 5

VendorProductVersionRange
mozillafirefox* <115.29.0
mozillafirefox* <144.0
mozillafirefox*≥116.0  –  <140.4.0
mozillathunderbird* <140.4.0
mozillathunderbird*≥141.0  –  <144.0

References 8

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1989978
    Issue TrackingPermissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-81/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-82/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-83/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-84/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-85/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.