CVE-2025-1012

HIGH EPSS 33.5%
Published Feb 4, 20251y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 4, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

CVSS Details

Base Score
7.5
Exploitability
1.6
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
33.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

VendorProductVersionRange
mozillafirefox* <115.20.0
mozillafirefox* <135.0
mozillafirefox*≥128.1.0  –  <128.7.0
mozillathunderbird* <135.0
mozillathunderbird*≥128.0.1  –  <128.7.0

References 8

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
    Permissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-07/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-08/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-09/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-10/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-11/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.