CVE-2025-4919 (GCVE-0-2025-4919)

Vulnerability from cvelistv5 – Published: 2025-05-17 21:07 – Updated: 2026-04-13 14:25
VLAI
Title
Out-of-bounds access when optimizing linear sums
Summary
An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. This vulnerability was fixed in Firefox 138.0.4, Firefox ESR 128.10.1, Firefox ESR 115.23.1, Thunderbird 128.10.2, and Thunderbird 138.0.2.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 115.23.1 , ≤ 115.* (rpm)
Unaffected: 128.10.1 , ≤ 128.* (rpm)
Unaffected: 138.0.4 , ≤ * (rpm)
Create a notification for this product.
Mozilla Thunderbird Unaffected: 128.10.2 , ≤ 128.* (rpm)
Unaffected: 138.0.2 , ≤ * (rpm)
Create a notification for this product.
Credits
Manfred Paul working with Trend Micro's Zero Day Initiative
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

Author Source Type Date Other

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.