Vulnerability in Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8)
CVE-2021-26701
.NET Core Remote Code Execution Vulnerability
EPSS: 0.028 (86.3th percentile) — read the EPSS interpretation.
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/E:U/RL:O/RC:C.
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 5.0 — versions 5.0.0
- Microsoft .Net Core 2.1 — versions 2.1
- Microsoft .Net Core 3.1 — versions 3.1
- Microsoft Powershell Core 7.0 — versions 7.0.0
- Microsoft Powershell Core 7.1 — versions 7.1.0
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26701 (x_refsource_MISC)
- FEDORA-2021-e2d218afe6 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-904d0bd496 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-1b22f31541 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-138728e59b (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-3da33cdc80 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-265a3c7cb9 (vendor-advisory, x_refsource_FEDORA)
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.