Cyber Resilience

CVE-2026-9942

MediumUpdated

Published: 28 May 2026

Published
28 May 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
EPSS Score 0.0020 9.9th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-9942 is a medium-severity Use of Uninitialized Variable (CWE-457) vulnerability in Google Chrome. Its CVSS base score is 5.0 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Credential Access (T1212); ranked at the 9.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Uninitialized Use in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-457

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
attack.mitre.org →
Why these techniques?

Uninitialized use enables site isolation bypass from compromised renderer, directly facilitating credential access and browser session hijacking via crafted HTML.

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

CVEs Like This One

CVE-2026-10960Same product: Apple Macos
CVE-2026-9944Same product: Apple Macos
CVE-2026-9935Same product: Apple Macos
CVE-2022-0806Same product: Apple Macos
CVE-2022-0799Same product: Apple Macos
CVE-2022-0791Same product: Apple Macos
CVE-2022-0796Same product: Apple Macos
CVE-2022-0805Same product: Apple Macos
CVE-2022-0803Same product: Apple Macos
CVE-2022-0798Same product: Apple Macos

Affected Assets

google
chrome
≤ 148.0.7778.216 · ≤ 148.0.7778.215

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References