What is CVE-2023-25750?

CVE-2023-25750 is a medium-severity vulnerability in Mozilla Firefox, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2023-06-02.

How severe is CVE-2023-25750?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Path Traversal in Mozilla Firefox

CVE-2023-25750

Under certain circumstances, a ServiceWorker's offline cache may have leaked to the file system when using private browsing mode. This vulnerability affects Firefox < 111.

Published 2023-06-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (37.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

References

www.mozilla.org/security/advisories/mfsa2023-09/ (Vendor Advisory)
bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-25750?: CVE-2023-25750 is a medium-severity vulnerability in Mozilla Firefox, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2023-06-02.
How severe is CVE-2023-25750?: Medium severity. CVSS v3 base score is 4.3 out of 10.