CVEs / CVE-2021-21132
CVE-2021-21132: Google Chrome vulnerability
- critical 9.6 CVSS 3.1 (NVD)
- EPSS 25.1% chance of exploitation in the next 30 days, higher than 97% of CVEs (4 Nov 2026)
- Last changed at its sources
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Description
Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially perform a sandbox escape via a crafted Chrome Extension.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Google Chrome | from unspecified, before 88.0.4324.96 | 88.0.4324.96 |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 4 Nov 2026.
Severity
| CVSS 3.1 | 9.6 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-1021 |
References
- CVE-2021-21132 on NVD
- CVE-2021-21132 on OSV
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html Release Notes, Vendor Advisory
- https://crbug.com/1128206 Permissions Required, Third Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21132 Third Party Advisory
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.