Description
Microsoft Exchange Server Spoofing Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 – < 15.00.1497.026 | 15.00.1497.026 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 21 | 15.01.0 – < 15.01.2308.020 | 15.01.2308.020 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 22 | 15.0.0 – < 15.01.2375.017 | 15.01.2375.017 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 10 | 15.02.0 – < 15.02.0792.019 | 15.02.0792.019 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 | 15.02.0 – < 15.02.0986.014 | 15.02.0986.014 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
exploit-io/CVE-2021-41349 ★ 10 · Jan 6, 2022
Exploiting: CVE-2021-41349
-
0xrobiul/CVE-2021-41349 ★ 5 · Jul 30, 2022
Microsoft Exchange Server Spoofing Vulnerability Exploit!
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Microsoft Exchange Server Pre-Auth POST Based Cross-Site Scripting http/cves/2021/CVE-2021-41349.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Advisories 1
- MSRC-CVE-2021-41349 Microsoft Exchange Server Spoofing Vulnerability Microsoft Security Response Center · Nov 11, 2021
References
- Microsoft Exchange Server Spoofing Vulnerability vendor-advisory patch