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CVE-2023-4863: Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2023-4863
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Google Chromium WebP contains a heap-based buffer overflow vulnerability that allows a remote attacker to perform an out-of-bounds memory write via a crafted HTML page. This vulnerability can affect applications that use the WebP Codec.

CSIRTS triage

vendor: Googleproduct: Chromium WebPMemory corruption
What
A heap-based buffer overflow vulnerability in Google Chromium WebP allows for out-of-bounds memory writes.
Who is affected
Applications using the WebP Codec in Google Chromium are affected.
Urgency
Immediate remediation is necessary due to active exploitation and critical severity.
Action
Users should update Google Chromium to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-09-13
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-4863

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-4863coverage & exploitation statusNVD · CVE.org

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