CVE-2023-4054

low-risk
Published 2023-08-01

When opening appref-ms files, Firefox did not warn the user that these files may contain malicious code. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 116, Firefox ESR < 102.14, Firefox ESR < 115.1, Thunderbird < 102.14, and Thunderbird < 115.1.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Mozilla

References (12)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1840777
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-29/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-30/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-31/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-32/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-33/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1840777
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-29/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-30/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-31/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-32/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2023-33/
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal