CVE-2021-23973
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 1.4%
exploitation probability
1.4%top 29% of all CVEs
observed exploitation
nono source reports it
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.
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1690976https://lists.debian.org/debian-lts-announce/2021/03/msg00000.htmlhttps://security.gentoo.org/glsa/202104-09https://security.gentoo.org/glsa/202104-10https://www.debian.org/security/2021/dsa-4866https://www.mozilla.org/security/advisories/mfsa2021-07/https://www.mozilla.org/security/advisories/mfsa2021-08/https://www.mozilla.org/security/advisories/mfsa2021-09/