CISA KEV · Known exploitedHigh

CVE-2023-5217

Google Chromium libvpx

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)

CVSS
8.8
EPSS
49.0%
98.8% percentile
CISA KEV
Listed
Published
2023.09.29
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability49.0%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Google Chromium libvpx
Affected versions
117.0.5938.132, 1.13.1, < 1.13.1, 116.0.1938.98, 117.0.2045.47, 116.0.5845.229, < 115.3.1, < 118.0.1, < 118.1, 37, 38, 39, 10.0, 11.0, 12.0, >= 17.0 < 17.0.3, 16.7, < 117.0.5938.132, 9.0
Fixed versions
1.13.1, 115.3.1, 118.0.1, 118.1, 17.0.3, 117.0.5938.132

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2023.10.23
  1. 1
    Identify

    Confirm that Google Chromium libvpx and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-787
KEV added
2023.10.02
Ransomware use
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