CVE-2025-8034

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 affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

Reserved 2025-07-22 | Published 2025-07-22 | Updated 2025-07-22 | Assigner mozilla

Problem types

Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141

Product status

Any version before 141
affected

Any version before 115.26
affected

Any version before 128.13
affected

Any version before 140.1
affected

Any version before 141
affected

Any version before 128.13
affected

Any version before 140.1
affected

Credits

the Mozilla Fuzzing Team

References

bugzilla.mozilla.org/...970422%2C1970422%2C1970422%2C1970422 (Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141)

www.mozilla.org/security/advisories/mfsa2025-56/

www.mozilla.org/security/advisories/mfsa2025-57/

www.mozilla.org/security/advisories/mfsa2025-58/

www.mozilla.org/security/advisories/mfsa2025-59/

www.mozilla.org/security/advisories/mfsa2025-61/

www.mozilla.org/security/advisories/mfsa2025-62/

www.mozilla.org/security/advisories/mfsa2025-63/

cve.org (CVE-2025-8034)

nvd.nist.gov (CVE-2025-8034)

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