CVE-2023-25740

Name: CVE-2023-25740
Creator: NVD / NIST
Published: 2023-06-02T17:15:11.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2023-25740 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>*This bug only affects Firefox for Windows. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110.

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

0.52%

40.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 110.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1812354Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1812354Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1812354Issue Tracking, Permissions Required

Timeline

Published: Jun 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-25740?

How severe is CVE-2023-25740?

CVE-2023-25740 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2023-25740?

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-2023-25740?

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

Scan your code now

Source: NVD / NIST