CVE-2021-21132
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 23.41% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1021
- Affected
- google/chrome · microsoft/edge chromium
- Source
- chrome-cve-admin@google.com
EPSS 23.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1128206Permissions Required, Third Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21132Third Party Advisory
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1128206Permissions Required, Third Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21132Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.