CVE-2021-23973

EPSS 1.4%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

26 Feb 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

Affected products

Mozilla · Firefox Mozilla · Firefox ESR Mozilla · Thunderbird

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1690976 https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html https://security.gentoo.org/glsa/202104-09 https://security.gentoo.org/glsa/202104-10 https://www.debian.org/security/2021/dsa-4866 https://www.mozilla.org/security/advisories/mfsa2021-07/https://www.mozilla.org/security/advisories/mfsa2021-08/https://www.mozilla.org/security/advisories/mfsa2021-09/