CVE-2021-41349
Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Exchange Server Spoofing Vulnerability
Microsoft Exchange Server Spoofing Vulnerability
- Record
CVE-2021-41349- CVSS 3.1
- 6.5 Medium
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 - Updated
- 2026-11-02
EUVDEUVD-2021-28378
Microsoft Exchange Server Spoofing Vulnerability
- Record
EUVD-2021-28378- CVSS 3.1
- 6.5 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xjg9-924r-39mj
Microsoft Exchange Server Spoofing Vulnerability This CVE ID is unique from CVE-2021-42305.
Microsoft Exchange Server Spoofing Vulnerability This CVE ID is unique from CVE-2021-42305.
- Record
GHSA-xjg9-924r-39mj- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
NVD
Microsoft Exchange Server Spoofing Vulnerability
- Record
CVE-2021-41349- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | Microsoft Exchange Server Pre-Auth POST Based Cross-Site Scripting | |
| PoC in GitHub | 0xrobiul/CVE-2021-41349 | 2022-07-30 |
| PoC in GitHub | exploit-io/CVE-2021-41349 | 2022-01-06 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-41349 is a medium vulnerability (CVSS 6.5) in Microsoft Exchange Server, published November 10, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 93.5%, the 99th percentile. No source names a fixed version.