Cyber Resilience

CVE-2026-11304

HighUpdated

Published: 05 June 2026

Published
05 June 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0019 8.5th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-11304 is a high-severity Use After Free (CWE-416) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 8.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Use after free in PDFium in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: Low)

CWE(s)
CWE-416

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1204.002 Malicious File Execution
An adversary may rely upon a user opening a malicious file in order to gain execution.
attack.mitre.org →
Why these techniques?

UAF in PDFium directly enables client-side exploitation via malicious PDF (T1203) requiring user execution of crafted file (T1204.002).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

google
chrome
≤ 149.0.7827.53

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.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References