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 |
|---|---|---|
| Chrome | 116.0.5845.187 < 116.0.5845.187 (affected) | |
| libwebp | 1.3.2 < 1.3.2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Chrome · Vendor · USA |
| Reserved | 2023-09-09T01:02:58 |
| Published | 2023-09-12T14:24:59 |
| Last Updated | 2025-10-21T23:05:38 |
Community Chatter & Buzz