CVE-2026-87553
HIGH
8.3
CVSS Score
Published: September 9, 2026 at 12:09 AM UTC
Updated: September 10, 2026 at 04:18 AM UTC
1 product affected across 1 vendorChrome
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Severity
HIGH8.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
Improper input validation in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
Release NotesVendor Advisory
Source: cverecord
https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.htmlSSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.3HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-20
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