CVE-2021-34535Remote Desktop Client Remote Code Execution Vulnerability
- 8.8HighCVSS base score
- 21.9%Exploitation in 30 daysEPSS · top 2.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Remote Desktop Client Remote Code Execution Vulnerability
Timeline
ID reserved
By microsoft
- 2 months later
· 2 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 21.9% · top 2.3% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
Microsoft · Remote Desktop client for Windows Desktop
- affected 1.2.0.0 – < publication
Microsoft · Windows 10 Version 1507
- affected 10.0.10240.0 – < 10.0.10240.19022
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.4583
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.2114
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < 10.0.17763.2114
Microsoft · Windows 10 Version 1909
- affected 10.0.0 – < 10.0.18363.1734
Microsoft · Windows 10 Version 2004
- affected 10.0.0 – < 10.0.19041.1165
Microsoft · Windows 10 Version 20H2
- affected 10.0.0 – < 10.0.19042.1165
Microsoft · Windows 10 Version 21H1
- affected 10.0.0 – < 10.0.19043.1165
- affected 6.1.0 – < 6.1.7601.25685
Microsoft · Windows 7 Service Pack 1
- affected 6.1.0 – < 6.1.7601.25685
- affected 6.3.0 – < 6.3.9600.20094
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.7601.0 – < 6.1.7601.25685
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.23435
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.20094
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.4583
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.2114
References
References2
- Remote Desktop Client Remote Code Execution Vulnerability (opens in a new tab)vendor-advisorypatch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34535 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-21188 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-34535)Record last updated .