CVE-2021-29961

EPSS 0.8%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

24 Jun 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

When styling and rendering an oversized `<select>` element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox < 89.

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1700235 https://security.gentoo.org/glsa/202107-09 https://www.mozilla.org/security/advisories/mfsa2021-23/