CVE-2025-4093

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 affects Firefox ESR < 128.10 and Thunderbird < 128.10.

Reserved 2025-04-29 | Published 2025-04-29 | Updated 2025-05-01 | Assigner mozilla

Problem types

Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10

Product status

Any version before 128.10
affected

Any version before 128.10
affected

Credits

Andrew McCreight

References

bugzilla.mozilla.org/show_bug.cgi?id=1894100 (Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10)

www.mozilla.org/security/advisories/mfsa2025-29/

www.mozilla.org/security/advisories/mfsa2025-32/

cve.org (CVE-2025-4093)

nvd.nist.gov (CVE-2025-4093)

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