VulnerabilityModified

CVE-2021-41349

Microsoft Exchange Server Spoofing Vulnerability

MEDIUM 6.5EPSS 93.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 93.5%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft Exchange Server Spoofing Vulnerability

CVSS 3.1: 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS: 93.50% probability · 100th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Affected: microsoft/exchange server
Source: secure@microsoft.com

EPSS trend

EPSS 93.5% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41349
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41349Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.