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VULNERABILITIES

CVE-2025-5272 Details

Description

Memory safety bugs present in Firefox 138 and Thunderbird 138. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 139 and Thunderbird 139.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.3 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1726254%2C1742738%2C1960121 [email protected]Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-42/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-45/ [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-787Out-of-bounds WriteCISA-ADP

Affected Products

ProductVersions
mozilla firefox
< 139.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
< 139.0

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-5272
NVD Published Date:
May 27, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-5272 Details - Not Deferred