---
id: CVE-2025-13502
title: A flaw was found in WebKitGTK and WPE WebKit
summary: >-
  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.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
published: '2025-11-25'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13502'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2025:22789'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:22790'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23110'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23433'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23434'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23451'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23452'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23583'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23591'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23742'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2025:23743'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-13502'
    label: secalert@redhat.com
  - url: 'https://bugs.webkit.org/show_bug.cgi?id=302218'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2416300'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00578
epssPercentile: 0.45274
ingestedAt: '2026-06-29T13:24:34.611Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.