Vulnerability in Google Chrome
CVE-2021-21172
Insufficient policy enforcement in File System API in Google Chrome on Windows prior to 89.0.4389.72 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.017 (75.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Microsoft Windows
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 32, 33, 34
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
- crbug.com/1150810 (Permissions Required, Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2021/dsa-4886 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202104-08 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21172?
- CVE-2021-21172 is a high-severity vulnerability in Google Chrome. CVSS score: 8.1/10. Published 2021-03-09.
- How severe is CVE-2021-21172?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-21172 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.