CVE-2025-13502 | Webkit: webkitgtk / wpe webkit: out-of-bounds read and integer underflow vulnerability leading to dos

A flaw was found in WebKitGTK and WPE WebKit. This vulnerability allows an out-of-bounds read and integer underflow, leading to a UIProcess crash (DoS) via a crafted payload to the GLib remote inspector server.

Published: 2025-11-25 Last update: 2026-04-20 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-13502 is rated Low Risk (35.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-13502

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-01 0.04% 0.05% +0.01%
2 2025-11-25 — 0.04% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-13502

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-13502

GitHub Security Advisory for CVE-2025-13502

GHSA-r6gx-fcg6-8hhj · Severity: high — A flaw was found in WebKitGTK and WPE WebKit. This vulnerability allows an out-of-bounds read and...

OS Trackers for CVE-2025-13502

vendor priority summary link
debian end-of-life CVE-2025-13502 end-of-life priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 3. https://security-tracker.debian.org/tracker/CVE-2025-13502
redhat high — https://access.redhat.com/security/cve/CVE-2025-13502
suse high CVE-2025-13502 severity important: SUSE including 112 source package names (2.2.0-4.55:gpg2-2.4.4-slfo.1.1_2.1, 2.2.1-7.2:gpg2-2.4.4-slfo.1.1_2.1, …), 499 product×package rows across 72 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (72 product lines)): Fixed 481, First Fixed 18. https://www.suse.com/security/cve/CVE-2025-13502/
ubuntu medium CVE-2025-13502 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 36 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): ignored 14, DNE 13, released 5, needs-triage 4. https://ubuntu.com/security/CVE-2025-13502

Affected software / configurations for CVE-2025-13502

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-13502

cvelogic Threat Intelligence