Vulnerability Monitor

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CVE-2025-1933

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 affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

Published

2025-03-04T14:15:38.170

Last Modified

2025-04-03T13:29:37.270

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.6 (HIGH)

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 115.21.0	Yes
Application	mozilla	firefox	< 136.0	Yes
Application	mozilla	firefox	< 128.8.0	Yes
Application	mozilla	thunderbird	< 128.8	Yes
Application	mozilla	thunderbird	< 136.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 Issue Tracking ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-14/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-15/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-16/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-17/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-18/ Vendor Advisory ([email protected])