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VULNERABILITIES

CVE-2025-4093 Details

Description

Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.10 and Thunderbird 128.10.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html CVE
https://bugzilla.mozilla.org/show_bug.cgi?id=1894100 [email protected]Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-29/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-32/ [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferCISA-ADP

Affected Products

ProductVersions
mozilla firefox
< 128.10

CPE

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

Remediation

  • No remediation found in references.
mozilla thunderbird
< 128.10.0

CPE

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

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-4093
NVD Published Date:
Apr 29, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-4093 Details - Not Deferred