CVE-2025-1009

CRITICAL EPSS 63.3%
Published Feb 4, 20251y ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Feb 4, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. 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
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
63.3% 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*≥128.0.1  –  <128.7.0
mozillathunderbird*≥131.0  –  <135.0

References 8

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1936613
    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.