CVE-2022-21979

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 82.5% of scored records. A rank, not a probability.

NVD base score

4.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-08-09 19:47Z4 YR AGO

Last updated

2025-01-02 19:34Z1 YR AGO

Reserved

2021-12-16

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Weaknesses

No CWE assigned

Data version

5.1

Document digest

fd4948e4a8474ea56b0da5a46bbe491b029bdfc9d89cadd734ddf164c89eba32

• msrc.microsoft.comMicrosoft Exchange Server Information Disclosure Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21979vendor-advisory