CVE-2025-0243

MEDIUM EPSS 15.9%
Published Jan 7, 20251y ago · Modified Jun 17, 20261w ago
5.1 CVSS 3.1
Medium
Find Similar
Published Jan 7, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. 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 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

CVSS Details

Base Score
5.1
Exploitability
2.5
Impact
2.5
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
15.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 4

VendorProductVersionRange
mozillafirefox* <128.6.0
mozillafirefox* <133.0
mozillathunderbird* <128.6.0
mozillathunderbird*≥129.0  –  <134.0

References 6

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
    Broken LinkIssue Tracking
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-01/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-02/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-04/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-05/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.