CVE-2020-17144

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.365 · 98 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 2 exploits · PoC

Likely / severe?

36.5% (98th) EPSS

CVSS 6 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Remote Code Execution Vulnerability

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6–8.8

v2.06mediumAV:N/AC:M/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 6.8 · impact 6.4

v2.06mediumAV:N/AC:M/Au:S/C:P/I:P/A:P/E:Hsecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.4highAV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.4highCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · ENISA EU

v3.18.4highCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.7 · impact 6

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-94US

exploits (2)

Public proof-of-concept and weaponised exploit code.

Airboi/CVE-2020-17144-EXPExchange2010 authorized RCEPoC · poc_in_github
zcgonvh/CVE-2020-17144weaponized tool for CVE-2020-17144PoC · poc_in_github

affected products (3)

Products and version ranges known to be affected.

Microsoft Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 310 → publicationenisa_euvdEU
Microsoft Corp Microsoft Exchange Server≤ 2010 SP3 Update Rollup 31fstec_bduRU
microsoft exchange server= 2010nvdUScpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-12-10modified 2026-06-17

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+3739 more

references (9)

External citations — patches, advisories, analysis.

scry

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