CVE-2025-1943

HIGH EPSS 32.3%
Published Mar 4, 20251y ago · Modified Jun 17, 20261w ago
8.2 CVSS 3.1
High
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Published Mar 4, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 136 and Thunderbird 136.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
32.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-122

Affected Products 2

VendorProductVersionRange
mozillafirefox* <136.0
mozillathunderbird* <136.0

References 3

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/buglist.cgi?bug_id=1869650%2C1938451%2C1940326%2C1944052%2C1944063%2C1947281
    Broken Link
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-14/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-17/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.