CVE-2022-0306
Published: 12 February 2022
Summary
CVE-2022-0306 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 9.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A heap buffer overflow vulnerability, tracked as CVE-2022-0306 and assigned CWE-787, affects PDFium within Google Chrome versions prior to 97.0.4692.99. The flaw permits heap corruption when processing specially crafted content, carrying a CVSS 3.1 base score of 8.8 that reflects network attack vector, low complexity, and no required privileges.
A remote attacker can trigger the issue by serving a crafted HTML page that causes Chrome to load and render malicious PDF content through PDFium. Successful exploitation can result in arbitrary code execution or memory corruption with impacts to confidentiality, integrity, and availability.
Chrome release notes direct users to update to version 97.0.4692.99 or later, which contains the fix for the PDFium engine. Public references such as the Chromium bug tracker entry and associated advisories confirm the patch was distributed through the stable channel update on 19 January 2022.
EPSS scores for the CVE reached a peak of 0.0647 and currently stand at 0.0567, indicating modest post-disclosure interest without evidence of widespread in-the-wild exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-15477
Vulnerability details
Heap buffer overflow in PDFium in Google Chrome prior to 97.0.4692.99 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.