CVEs / CVE-2026-85046
CVE-2026-85046: Google Chromium V8 Type Confusion Vulnerability
- Known exploited in the CISA KEV catalog since 4 Sep 2026
- high 8.8 CVSS 3.1 (from the CNA)
- EPSS 1.8% chance of exploitation in the next 30 days, higher than 78% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Google Chromium V8 contains a type confusion vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Description
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)
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Google Chrome | from 152.0.7977.82, before 152.0.7977.82 | 152.0.7977.82 |
Exploitation
| In CISA KEV since | 4 Sep 2026 |
|---|---|
| Due date for US federal agencies | 18 Sep 2026 |
| Used in ransomware campaigns | Unknown |
| 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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-843 |
References
- CVE-2026-85046 on NVD
- CVE-2026-85046 in the CISA KEV catalog
- https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01882797386.html (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- CVE-2026-85046 on OSV
- https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01882797386.html Release Notes, Vendor Advisory
- https://issues.chromium.org/issues/542403045 Permissions Required
- https://github.com/Serotav/Writeups/blob/77556c57999805fa7815a114da51d91cf24fbea9/v8/When_Sorting_Leads_To_Confusion.md Exploit, Third Party Advisory
- https://github.com/v8/v8/commit/e0562d87ad9c17042b581582c99237d798572e67 Patch
- https://news.ycombinator.com/item?id=49570669 Issue Tracking, Third Party Advisory
- https://serotav.github.io/Writeups/v8/when-sorting-leads-to-confusion/ Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85046 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.