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

CVE-2023-5217 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 49.0%.

Is there a public PoC exploit available for CVE-2023-5217?

Yes, a public proof-of-concept exploit is available for CVE-2023-5217. Prioritise patching immediately. EPSS: 49.0%.

Is there a patch available for CVE-2023-5217?

Yes, a patch is available for CVE-2023-5217. Update the affected software to the latest version immediately.

Libvpx CVE-2023-5217

HIGH

Out-of-bounds Write (CWE-787)

2023-09-28 chrome-cve-admin@google.com

Memory Corruption Buffer Overflow Google Libvpx Edge Edge Chromium Firefox Thunderbird Fedora Debian Linux Ipados Iphone Os Chrome Enterprise Linux

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Added to CISA KEV

Jul 14, 2026 - 04:22 CISA

CVE Published

Sep 28, 2023 - 16:15 nvd

HIGH 8.8

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

3 npm packages depend on electron (3 direct, 0 indirect)

Ecosystem-wide dependent count for version 24.0.0.

DescriptionNVD

AnalysisAI

Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High) Affected products include: Webmproject Libvpx, Microsoft Edge, Microsoft Edge Chromium, Mozilla Firefox, Mozilla Thunderbird. Version information: prior to 117.0.5938.132.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).