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

Vulnerability from cvelistv5 – Published: 2025-03-04 13:31 – Updated: 2026-04-13 14:27
VLAI
Title
JIT corruption of WASM i32 return values on 64-bit CPUs
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 was fixed in 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
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 115.21 , ≤ 115.* (rpm)
Unaffected: 128.8 , ≤ 128.* (rpm)
Unaffected: 136 , ≤ * (rpm)
Create a notification for this product.
Mozilla Thunderbird Unaffected: 128.8 , ≤ 128.* (rpm)
Unaffected: 136 , ≤ * (rpm)
Create a notification for this product.
Credits
Xiangwei Zhang and kkdong of Tencent Security YUNDING LAB
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.