Buffer overflow in Cefsharp
CVE-2020-16009
Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.483 (98.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.483 · newest: 0.483 · change: 0.000
Affected products
- Cefsharp
- Google Chrome — versions unspecified
- Microsoft Edge
- Microsoft Edge Chromium
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 32, 33
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
- crbug.com/1143772 (Exploit, Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.html (Exploit, VDB Entry, Third Party Advisory)
- security.gentoo.org/glsa/202011-12 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
- www.debian.org/security/2021/dsa-4824 (vendor-advisory, Mailing List, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-16009?
- CVE-2020-16009 is a high-severity vulnerability in Cefsharp, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-11-03.
- How severe is CVE-2020-16009?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-16009 known to be exploited?
- Yes. CVE-2020-16009 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.