KEV · Actively exploited

CVE-2023-4863

HIGH 8.8 KEV Published on 2023-09-12

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)

Attack vector : Network No privileges required

Show raw CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS 99.74% exploit likely percentile 100.0%

CISA Known Exploited Vulnerability

Added to KEV: 2023-09-13
Remediation deadline: 2023-10-04
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware: Unknown (not documented by CISA)

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Mozilla Thunderbird Windows winget:Mozilla.Thunderbird

Affected ≥115.0 <115.2.2 Fixed in 115.2.2 Latest tracked 153.0.2 patched

NVD references 12 distinct products for this CVE — only those tracked by Scout (mobile and desktop catalog apps) are listed above. Libraries, servers and out-of-scope products do not appear here. Full list on NVD ↗

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

Android Fixed in October 2023 patch level

Vulnerable CPE configurations (2)

Vendor	Product	Platform	Versions	CPE 2.3 URI
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	<102.15.1	cpe:2.3:a:mozilla:thunderbird::::::::
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	≥115.0 <115.2.2	cpe:2.3:a:mozilla:thunderbird::::::::

View on NVD ↗ CISA KEV catalog ↗ Advisory · chromereleases.googleblog.com Advisory · crbug.com Advisory · github.com