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VULNERABILITIES

CVE-2025-8034 Details

Description

Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html CVE
https://bugzilla.mozilla.org/show_bug.cgi?id=1970422 [email protected]
https://www.mozilla.org/security/advisories/mfsa2025-56/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-57/ [email protected]Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-58/ [email protected]Vendor Advisory

see all 9 references

Weakness Enumeration

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

Affected Products

ProductVersions
mozilla firefox
< 115.26.0
< 141.0
>= 128.0, < 128.13.0
>= 140.0, < 140.1.0

CPE

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

Remediation

  • No remediation found in references.
mozilla thunderbird
< 128.13.0
< 141.0
>= 140.0, < 140.1.0

CPE

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

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-8034
NVD Published Date:
Jul 22, 2025
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2025-8034 Details - Not Deferred