CVE-2023-4863
CVSS v3
8.8
HIGH
EPSS Score
93.6 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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)
CISA Known Exploited Vulnerability
- Date Added
- 2023-09-13
- Patch Due Date
- 2023-10-04
- Ransomware Use
- Unknown
Technical details
- Published
- 2023-09-12
Frequently asked questions
What is 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)
Is CVE-2023-4863 actively exploited?
Yes. CVE-2023-4863 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-10-04.
What is the CVSS score for CVE-2023-4863?
CVE-2023-4863 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2023-4863 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2023 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).