CVE-2022-45420

Name: CVE-2022-45420
Creator: NVD / NIST
Published: 2022-12-22T20:15:45.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2022-45420 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Use tables inside of an iframe, an attacker could have caused iframe contents to be rendered outside the boundaries of the iframe, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

Use tables inside of an iframe, an attacker could have caused iframe contents to be rendered outside the boundaries of the iframe, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

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

0.57%

42.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 107.0
Mozilla	Firefox Esr	< 102.5
Mozilla	Thunderbird	< 102.5

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1792643Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-47/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-48/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-49/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1792643Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-47/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-48/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-49/Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-45420?

How severe is CVE-2022-45420?

CVE-2022-45420 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2022-45420?

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-2022-45420?

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

Scan your code now

Source: NVD / NIST