CVE-2025-10536

Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

CVSS 3.1

6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-200

Published

2025-09-16

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• mozilla:firefox
• mozilla:thunderbird

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1981502
• https://www.mozilla.org/security/advisories/mfsa2025-73/
• https://www.mozilla.org/security/advisories/mfsa2025-75/
• https://www.mozilla.org/security/advisories/mfsa2025-77/
• https://www.mozilla.org/security/advisories/mfsa2025-78/

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