Google Chromium V8 Out of Bounds Write Vulnerability
Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)09 Sept 2026
- Exploited in EUVD (ENISA)09 Sept 2026
- Used by ransomwareno
- EPSS above 10 %3.5%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
- 153.0.8010.36 <153.0.8010.36
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-111497Google Brotli Unchecked Return Value Vulnerability8.6 · Rising fast
- CVE-2026-58704Google Pixel Improper Authorization Vulnerability4.7 · Actively exploited
- CVE-2026-85046Google Chromium V8 Type Confusion Vulnerability5.4 · Actively exploited
- CVE-2026-11645Google Chromium V8 Out-of-Bounds Read and Write Vulnerability5.4 · Actively exploited
- CVE-2026-5281Google Dawn Use-After-Free Vulnerability6.3 · Background exploitation
- CVE-2026-3910Google Chromium V8 Improper Restriction of Operations Within the Bounds of a Memory Buffer Vulnerability5.4 · Background exploitation