Is CVE-2023-5217 actively exploited?

Yes. CVE-2023-5217 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-5217 be exploited remotely?

The attack vector of CVE-2023-5217 has not been classified yet.

What is the CVSS score of CVE-2023-5217?

CVE-2023-5217 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-5217

HIGHCISA KEVIN THE WILD

CVE-2023-5217

Published: October 2, 2023

EPSS:3.52%probability of exploitation in 30 daysPercentile:87.4th

Official Description

Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

NVD Source

CISA KEV Advisory

Google Chromium libvpx Heap Buffer Overflow Vulnerability

Added to KEV: 2023-10-02Federal patch deadline: 2023-10-23

Required Action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Risk Analysis

A heap buffer overflow in Google Chromium's libvpx, specifically in vp8 encoding, allows remote attackers to potentially exploit heap corruption via a crafted HTML page. This high-severity flaw is actively exploited in the wild, making it a critical update for affected browsers.

This vulnerability is actively being exploited in the wild. Exploitation occurs remotely when a user visits a specially crafted HTML page.

Recommended Action

Update web browsers that utilize libvpx, such as Google Chrome, to the latest available versions to patch this heap buffer overflow vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-5217 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-5217 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.