Vulnerability in Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8)
CVE-2021-26701
.NET Core Remote Code Execution Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.301 (98.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.301 · newest: 0.301 · change: 0.000
Affected products
- Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8) — versions 15.9.0
- Microsoft Visual Studio 2019 Version 16.4 (Includes 16.0 - 16.3) — versions 16.0
- Microsoft Visual Studio 2019 Version 16.7 (Includes 16.0 – 16.6) — versions 16.0.0
- Microsoft Visual Studio 2019 Version 16.8 (Includes 16.0 - 16.7) — versions 16.0
- Microsoft Visual Studio 2019 Version 16.9 (Includes 16.0 - 16.8) — versions 15.0.0
- Microsoft .Net
- Microsoft .Net 5.0 — versions 5.0.0
- Microsoft .Net Core
- Microsoft .Net Core 2.1 — versions 2.1
- Microsoft .Net Core 3.1 — versions 3.1
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26701 (Patch, 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)
- 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)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2021-26701?
- CVE-2021-26701 is a high-severity vulnerability in Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8). CVSS score: 8.1/10. Published 2021-02-25.
- How severe is CVE-2021-26701?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-26701 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.