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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.
Metrics
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OR
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions from (including) 129.0 up to (excluding) 136.0
*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 136.0
*cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions up to (excluding) 115.21.0
*cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions from (including) 116.0 up to (excluding) 128.8.0
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 128.8
Added
Reference Type
Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 Types: Issue Tracking
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-14/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-15/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-16/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-17/ Types: Vendor Advisory
Added
Reference Type
Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-18/ Types: Vendor Advisory
CVE Modified by CISA-ADP3/25/2025 10:15:27 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CVE Modified by CISA-ADP3/12/2025 1:15:48 PM
Action
Type
Old Value
New Value
Removed
CVSS V3.1
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Removed
CWE
CWE-252
CVE Modified by Mozilla Corporation3/04/2025 7:15:36 PM
Action
Type
Old Value
New Value
Changed
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 affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8.
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.
New CVE Received from Mozilla Corporation3/04/2025 9:15:38 AM
Action
Type
Old Value
New Value
Added
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 affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8.