CVE-2026-87491

Aliases:DEBIAN-CVE-2026-87491
Modified
Published: 09 Sept 2026, 00:09
Last modified:10 Sept 2026, 03:55

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
0.29% LOW
0% probability
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Sept 2026, 00:09
Published
Vulnerability first disclosed
09 Sept 2026, 00:00
Added to CISA KEV
Google Chromium V8 Out of Bounds Write Vulnerability
10 Sept 2026, 03:55
Last Modified
Vulnerability information updated
23 Sept 2026, 00:00
CISA Remediation Due
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.

Description

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)

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.29%• Percentile: 21%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•chromium

    all | all | all

  • google•chrome

    ≥ 153.0.8010.36, < 153.0.8010.36 | < 153.0.8010.36

References (4)