🛡️ CVE-2024-6604 — firefox

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-120 NVD

7.5

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Memory safety bugs present in Firefox 127, Firefox ESR 115.12, and Thunderbird 115.12. 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 affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2024-6604 is classified as CWE-120: Classic Buffer Overflow. Input is copied into a fixed-size buffer without a length check, overwriting memory past the end of it.

Affected software

CVE-2024-6604 is recorded against 2 packages.

firefox (fixed in 126.0)
thunderbird (from 116.0 up to 128.0)

Timeline and source

Published on 9 July 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

bugzilla.mozilla.org
www.mozilla.org
www.mozilla.org
www.mozilla.org
www.mozilla.org
bugzilla.mozilla.org
www.mozilla.org
www.mozilla.org
www.mozilla.org
www.mozilla.org

CVE-2024-6604 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity HIGH

CVSS Score 7.5

CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE CWE-120

Public Exploit ✅ No

Source NVD

Published 2024-07-09

Updated 2026-08-11

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
firefox	—	126.0
thunderbird	116.0	128.0

References

Issue Tracking https://bugzilla.mozilla.org/buglist.cgi?bug_id=1748105%2C1837550%2C1884266

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-29/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-30/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-31/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-32/

Issue Tracking https://bugzilla.mozilla.org/buglist.cgi?bug_id=1748105%2C1837550%2C1884266

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-29/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-30/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-31/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-32/

🔗 NVD 🔗 Mitre

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