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CVE-2021-41350
Microsoft Exchange Server Spoofing Vulnerability
Medium6.5EPSS 1.9%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Microsoft Exchange Server Spoofing Vulnerability
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- Spoofing
Affected products
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 21
- affected 15.01.0 – < 15.01.2308.015
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 10
- affected 15.02.0 – < 15.02.0922.014
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 11
- affected 15.02.0 – < 15.02.0986.009
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 22
- affected 15.0.0 – < 15.01.2375.012
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41350 (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)
- 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://trackcve.app/cve/CVE-2021-41350)Record last updated .