What is CVE-2023-25362?

CVE-2023-25362 is a high-severity vulnerability in Webkitgtk, classified under Use After Free. CVSS score: 8.8/10. Published 2023-03-02.

How severe is CVE-2023-25362?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Webkitgtk

CVE-2023-25362

A use-after-free vulnerability in WebCore::RenderLayer::repaintBlockSelectionGaps in WebKitGTK before 2.36.8 allows attackers to execute code remotely.

Vulnerability class: Use-After-Free

Published 2023-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Webkitgtk

Weakness classification (CWE)

CWE-416 — Use After Free

References

bugs.webkit.org/show_bug.cgi (Vendor Advisory)
www.openwall.com/lists/oss-security/2023/04/21/3 (mailing-list, Mailing List)
security.gentoo.org/glsa/202305-32 (vendor-advisory)

Frequently asked questions

What is CVE-2023-25362?: CVE-2023-25362 is a high-severity vulnerability in Webkitgtk, classified under Use After Free. CVSS score: 8.8/10. Published 2023-03-02.
How severe is CVE-2023-25362?: High severity. CVSS v3 base score is 8.8 out of 10.