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Vulnerability Intelligence Report
Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

CVE-2023-4863

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)

CISA KEV SSVC: Active Exploitation
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:99.74%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
Authentication
Weaponization
SSVC Action

Weaknesses (CWE)

CWE-787 ↗CWE-787 Out-of-bounds Write

Affected Products & Versions

Vendor Product Affected Versions
Google Chrome 116.0.5845.187 < 116.0.5845.187 (affected)
Google libwebp 1.3.2 < 1.3.2 (affected)

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

CISA KEV
ACTIVE IN CATALOG
EPSS Score
99.739%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityChrome · Vendor · USA
Reserved2023-09-09T01:02:58
Published2023-09-12T14:24:59
Last Updated2025-10-21T23:05:38

LINK COPIED TO CLIPBOARD