CVE-2021-41349
mediumpriority · attend · 60EPSS 0.935 · 100 %ileexploit · PoCEURUUSEPSS · scored 2026-10-27
Microsoft Exchange Server Spoofing Vulnerability
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMicrosoft Exchange Server 2013 Cumulative Update 23msrc_csaf
15.00.1497.026:Security Update:https://support.microsoft.com/help/5007409
https://support.microsoft.com/help/5007409 - FixedMicrosoft Exchange Server 2016 Cumulative Update 21msrc_csaf
15.01.2308.020:Security Update:https://support.microsoft.com/help/5007409
https://support.microsoft.com/help/5007409 - FixedMicrosoft Exchange Server 2016 Cumulative Update 22msrc_csaf
15.01.2375.017:Security Update:https://support.microsoft.com/help/5007409
https://support.microsoft.com/help/5007409 - FixedMicrosoft Exchange Server 2019 Cumulative Update 10msrc_csaf
15.02.0792.019:Security Update:https://support.microsoft.com/help/5007409
https://support.microsoft.com/help/5007409 - FixedMicrosoft Exchange Server 2019 Cumulative Update 11msrc_csaf
15.02.0986.014:Security Update:https://support.microsoft.com/help/5007409
https://support.microsoft.com/help/5007409
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (2)
Public proof-of-concept and weaponised exploit code.
- exploit-io/CVE-2021-41349Exploiting: CVE-2021-41349PoC · poc_in_github
affected products (23)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- msrc_CVE-2021-41349Microsoft Exchange Server Spoofing Vulnerability2021-11-09csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41349cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-41349cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41349cnnvd
- https://vigilance.fr/vulnerability/Microsoft-Exchange-Server-vulnerabilities-of-November-2021-36839cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021110940cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41349enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41349nvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41349PatchVendor Advisorynvd
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