Known exploited vulnerability
CVE-2026-85046
The short answer
CVE-2026-85046 affects Google Chrome and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-09-04: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
Type confusion in V8 in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Weakness: CWE-843.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Sep 4, 2026
Federal due date Sep 18, 2026
EPSS, next 30 days
1.8%
Higher than 79% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
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…
Affected products
Chrome. NVD's record lists the exact affected versions.
References
- chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01882797386.html Release NotesVendor Advisory
- issues.chromium.org/issues/542403045 Permissions Required
- github.com/Serotav/Writeups/blob/77556c57999805fa7815a114da51d91cf24fbea9/v8/When_Sorting_Leads_To_Confusion.md ExploitThird Party Advisory
- github.com/v8/v8/commit/e0562d87ad9c17042b581582c99237d798572e67 Patch
- news.ycombinator.com/item?id=49570669 Issue TrackingThird Party Advisory
- serotav.github.io/Writeups/v8/when-sorting-leads-to-confusion/ ExploitThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85046 US Government Resource
Questions
Is CVE-2026-85046 being exploited?
Yes. CISA added CVE-2026-85046 to its Known Exploited Vulnerabilities catalog on 2026-09-04, with a federal remediation due date of 2026-09-18.
How do I fix CVE-2026-85046?
CISA's required action: 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…
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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