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CVE-2021-23996

MEDIUMCVSS 6.5/10EPSS 0.72%

Last modified

CVE-2021-23996 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. By utilizing 3D CSS in conjunction with Javascript, content could have been rendered outside the webpage's viewport, resulting in a spoofing attack that could have been used for phishing or other attacks on a user. This vulnerability affects Firefox < 88.. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

By utilizing 3D CSS in conjunction with Javascript, content could have been rendered outside the webpage's viewport, resulting in a spoofing attack that could have been used for phishing or other attacks on a user. This vulnerability affects Firefox < 88.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
0.72%

49.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
MozillaFirefox< 88.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-23996?
By utilizing 3D CSS in conjunction with Javascript, content could have been rendered outside the webpage's viewport, resulting in a spoofing attack that could have been used for phishing or other attacks on a user. This vulnerability affects Firefox < 88.
How severe is CVE-2021-23996?
CVE-2021-23996 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23996?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23996?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST