Microsoft Microsoft Exchange Server 2016 Cumulative Update 20

Name: Microsoft Microsoft Exchange Server 2016 Cumulative Update 20
Brand: Microsoft

productEU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

unpatched

critical

by severity

0critical7high7medium0low

updated 2026-10-27

vulnerabilities (14)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2021-34473US	high10.0OT critical	100.0% (100th)	KEV	15.01.2242.008	2021-07-14	15.01.0 → 15.01.2242.008
CVE-2021-34523US	high7.5OT critical	100.0% (100th)	KEV	15.01.2242.008	2021-07-14	15.01.0 → 15.01.2242.008
CVE-2021-31207US	medium6.5OT critical	99.8% (100th)	KEV	15.01.2242.010	2021-05-11	15.01.0 → 15.01.2242.010
CVE-2021-33766US	medium5.0OT critical	98.2% (100th)	KEV	15.01.2242.008	2021-07-14	15.01.0 → 15.01.2242.008
CVE-2021-31196US	medium6.5OT critical	54.1% (99th)	KEV	15.01.2242.012	2021-07-14	15.01.0 → 15.01.2242.012
CVE-2021-28482US	high9.0	83.2% (100th)	Exploit	15.01.2242.008	2021-04-13	15.01.0 → 15.01.2242.008
CVE-2021-28480US	high10.0	71.2% (99th)	Exploit	15.01.2242.008	2021-04-13	15.01.0 → 15.01.2242.008
CVE-2021-31195US	medium6.8	73.7% (99th)	—	15.01.2242.010	2021-05-11	15.01.0 → 15.01.2242.010
CVE-2021-28481US	high10.0	36.2% (98th)	—	15.01.2242.008	2021-04-13	15.01.0 → 15.01.2242.008
CVE-2021-31206US	high7.9	13.0% (96th)	—	15.01.2242.012	2021-07-14	15.01.0 → 15.01.2242.012
CVE-2021-31198US	medium6.8	4.87% (92nd)	—	15.01.2242.010	2021-05-11	15.01.0 → 15.01.2242.010
CVE-2021-31209US	medium5.8	2.63% (85th)	—	15.01.2242.010	2021-05-11	15.01.0 → 15.01.2242.010
CVE-2021-33768US	medium5.2	1.23% (69th)	—	15.01.2242.012	2021-07-14	15.01.0 → 15.01.2242.012
CVE-2021-28483US	high7.7	1.20% (68th)	—	15.01.2242.008	2021-04-13	15.01.0 → 15.01.2242.008

The flaw types (CWEs) most of these CVEs share.

Which sources assert this record, and when.

scry

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