Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2023-4863

Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Chromium WebP, fix it now.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Oct 4, 2023.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
ChromeGoogle< 116.0.5845.187116.0.5845.187NVD
Chromium WebPGoogle——KEV
FirefoxMozilla< 102.15.1; < 117.0.1; >= 115.1.0, < 115.2.1; >= 115.0, < 115.2.2102.15.1; 117.0.1; 115.2.1; 115.2.2NVD

Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2023-4863 scored CVSS 8.8: Google Chromium WebP, Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

    CISA lists this as exploited in the wild. Unpatched Chromium WebP systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2023-4863: Google Chromium WebP, Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

    An official fix is now available for Google Chromium WebP. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

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Coverage

We have not published a story about this vulnerability yet.

References