What’s Vulnerable › Vulnerabilities

CVE-2022-46874

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-94

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.

Affected products

• Mozilla Firefox: before 108.0 — fixed in 108.0
• Mozilla Firefox ESR: before 102.6 — fixed in 102.6
• Mozilla Thunderbird: before 102.6 — fixed in 102.6

How to fix

Upgrade to a fixed version: Mozilla Firefox 108.0; Mozilla Firefox ESR 102.6; Mozilla Thunderbird 102.6. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1746139
• https://security.gentoo.org/glsa/202305-06
• https://security.gentoo.org/glsa/202305-13
• https://www.mozilla.org/security/advisories/mfsa2022-51/
• https://www.mozilla.org/security/advisories/mfsa2022-52/
• https://www.mozilla.org/security/advisories/mfsa2022-53/
• https://www.mozilla.org/security/advisories/mfsa2022-54/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1746139
• https://security.gentoo.org/glsa/202305-06
• https://security.gentoo.org/glsa/202305-13
• https://www.mozilla.org/security/advisories/mfsa2022-51/
• https://www.mozilla.org/security/advisories/mfsa2022-52/

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