CVE-2026-87630

Published Sep 9, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Integer overflow in WebRTC in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Analysis

AI-generated

Technical impact

An integer overflow flaw in the WebRTC component of Google Chrome lets a remote attacker read arbitrary memory inside the browser’s sandbox through a crafted HTML page. The vulnerability is classified as CWE‑190 and was rated Medium by Chromium security reviewers. If exploited, an attacker could obtain sensitive information from a user’s system or use the read data as a foothold for further attacks.

Affected Systems

Google Chrome versions prior to 153.0.8010.36 under the stable channel are vulnerable. Any installation that has not applied the update remains at risk.

Risk and Exploitability

The likely attack vector is a malicious website that serves a specially crafted HTML payload; the victim must visit the site with Chrome for the overflow to occur. The EPSS score is less than 1%, and the issue is not listed in CISA’s KEV catalog, indicating that exploit activity is currently low. The CVSS score of 4.3 places this vulnerability in the medium severity range, suggesting a moderate likelihood of exploitation if an attacker can deliver the payload.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update Chrome to version 153.0.8010.36 or later
  • If an update cannot be applied immediately, disable WebRTC via Chrome policy or use an extension that blocks WebRTC traffic
  • Enable sandbox‑only browsing mode or employ a browser configuration that enforces strict sandboxing
  • Regularly verify sandbox integrity and monitor for unexpected privilege escalation paths

Generated by OpenCVE AI on September 9, 2026 at 23:39 UTC.

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4790-1 chromium security update
Debian DSA Debian DSA DSA-6506-1 chromium security update
History
Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Integer Overflow in Chrome WebRTC Enabling Remote Memory Read
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
Title Integer Overflow in Chrome WebRTC Enabling Remote Memory Read
Type Values Removed Values Added
Description Integer overflow in WebRTC in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-190
References
Weaknesses
  • CWE-190

    Integer Overflow or Wraparound

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Sep 9, 2026, 8:04 PM
Reserved
Sep 8, 2026, 10:43 PM
Status
Analyzed
Published
Sep 9, 2026, 1:17 AM
Modified
Sep 10, 2026, 1:41 PM