CVE-2025-1933

HIGH EPSS 21.1%
Published Mar 4, 20251y ago · Modified Jun 17, 20261w ago
7.6 CVSS 3.1
High
Find Similar
Published Mar 4, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

CVSS Details

Base Score
7.6
Exploitability
2.8
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
21.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Affected Products 5

VendorProductVersionRange
mozillafirefox* <115.21.0
mozillafirefox* <136.0
mozillafirefox*≥116.0  –  <128.8.0
mozillathunderbird* <128.8
mozillathunderbird*≥129.0  –  <136.0

References 7

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1946004
    Issue Tracking
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-14/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-15/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-16/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-17/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-18/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.