CVE-2022-46874

Name: CVE-2022-46874
Creator: NVD / NIST
Published: 2022-12-22T20:15:46.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2022-46874 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.<br/>*Note*: This issue was originally included in the advisories for Thunderbird 102.6, but a patch (specific to Thunderbird) was omitted, resulting in it actually being fixed in Thunderbird 102.6.1. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

Description

A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.<br/>*Note*: This issue was originally included in the advisories for Thunderbird 102.6, but a patch (specific to Thunderbird) was omitted, resulting in it actually being fixed in Thunderbird 102.6.1. This vulnerability affects Firefox < 108, Thunderbird < 102.6.1, Thunderbird < 102.6, and Firefox ESR < 102.6.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.88%

54.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 108.0
Mozilla	Firefox Esr	< 102.6
Mozilla	Thunderbird	< 102.6

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1746139Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202305-06
https://security.gentoo.org/glsa/202305-13
https://www.mozilla.org/security/advisories/mfsa2022-51/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-52/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-53/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-54/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1746139Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202305-06
https://security.gentoo.org/glsa/202305-13
https://www.mozilla.org/security/advisories/mfsa2022-51/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-52/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-53/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-54/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-46874?

How severe is CVE-2022-46874?

CVE-2022-46874 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2022-46874?

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-2022-46874?

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

Scan your code now

Source: NVD / NIST