CVE-2025-1933 (GCVE-0-2025-1933)

Vulnerability from cvelistv5 – Published: 2025-03-04 13:31 – Updated: 2025-11-03 20:57
VLAI?
Summary
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.
Severity ?
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CWE
  • JIT corruption of WASM i32 return values on 64-bit CPUs
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: unspecified , < 136 (custom)
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    Mozilla Firefox ESR Affected: unspecified , < 115.21 (custom)
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    Mozilla Firefox ESR Affected: unspecified , < 128.8 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 136 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 128.8 (custom)
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Credits
Xiangwei Zhang and kkdong of Tencent Security YUNDING LAB
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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