SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-62912

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

MEDIUM 6.5EPSS 1.31%

Does this matter?

Lower severity and a low EPSS score (1.31%). Track it; it rarely justifies an emergency change on its own.

Description

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
1.31% probability · 69th percentile
CISA KEV
Not listed
Weakness
CWE-502
Affected
microsoft/exchange server · microsoft/exchange server subscription edition
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.