CVE-2025-4083 (GCVE-0-2025-4083)

Vulnerability from cvelistv5 – Published: 2025-04-29 13:13 – Updated: 2025-11-03 19:58
VLAI?
Summary
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
Severity ?
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • Process isolation bypass using "javascript:" URI links in cross-origin frames
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: unspecified , < 138 (custom)
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    Mozilla Firefox ESR Affected: unspecified , < 128.10 (custom)
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    Mozilla Firefox ESR Affected: unspecified , < 115.23 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 138 (custom)
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    Mozilla Thunderbird Affected: unspecified , < 128.10 (custom)
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Credits
Nika Layzell
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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.