CVE-2021-27065

mediumPriorität · handeln · 90OT-Risiko · kritischKEV · ausgenutztEPSS 0.999 · 100. PerzentilExploit · waffenfähigEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 3 exploits · waffenfähig

Likely / severe?

99.9% (100th) EPSS

CVSS 6.8 · medium

Is it mine?

103 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

hinzugefügt 2021-11-03beheben bis 2022-05-03

erforderliche Maßnahme Apply updates per vendor instructions.

EPSS · bewertet 2026-10-27

Microsoft Exchange Server Remote Code Execution Vulnerability

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenMicrosoft Exchange Server 2013 Cumulative Update 21msrc_csaf
15.00.1395.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2013 Cumulative Update 22msrc_csaf
15.00.1473.006:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2013 Cumulative Update 23msrc_csaf
15.00.1497.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2013 Service Pack 1msrc_csaf
15.00.0847.064:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 10msrc_csaf
15.01.1531.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 11msrc_csaf
15.01.1591.018:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 12msrc_csaf
15.01.1713.010:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 13msrc_csaf
15.01.1779.008:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 14msrc_csaf
15.01.1847.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 15msrc_csaf
15.01.1913.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 16msrc_csaf
15.01.1979.008:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 17msrc_csaf
15.01.2044.013:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 18msrc_csaf
15.01.2106.013:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 19msrc_csaf
15.01.2176.009:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 8msrc_csaf
15.01.1415.010:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2016 Cumulative Update 9msrc_csaf
15.01.1466.016:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019msrc_csaf
15.02.0221.018:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 1msrc_csaf
15.01.1979.006:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 2msrc_csaf
15.02.0397.011:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 3msrc_csaf
15.02.0464.015:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 4msrc_csaf
15.02.0659.012:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 5msrc_csaf
15.02.0595.008:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 6msrc_csaf
15.02.0529.013:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 7msrc_csaf
15.02.0721.013:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871
BehobenMicrosoft Exchange Server 2019 Cumulative Update 8msrc_csaf
15.02.0792.010:Security Update:https://support.microsoft.com/help/5000871
https://support.microsoft.com/help/5000871

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.8

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.8–8.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 6.4

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Hsecondary · CVSS-BT (t0sche)

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USAusnutzbarkeit 1.8 · Auswirkung 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · Microsoft Security Response Center US

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USAusnutzbarkeit 1.8 · Auswirkung 5.9

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

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

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-22USprimärCWE-20US

ATT&CK-Techniken

ATT&CK-Techniken, die dies ermöglicht oder abbildet.

Exploits (3)

Öffentlicher Proof-of-Concept- und Exploit-Code.

exploit/windows/http/exchange_proxylogon_rceMicrosoft Exchange ProxyLogon RCEwaffenfähig · metasploit
EDB-49637Microsoft Exchange 2019 - Server-Side Request Forgery (Proxylogon) (PoC)PoC · exploit_db
adamrpostjr/cve-2021-27065Quick One Line Powershell scripts to detect for webshells, possible zips, and logs.PoC · poc_in_github

betroffene Produkte (103)

Betroffene Produkte und Versionsbereiche.

Microsoft Microsoft Exchange Server 2013 Cumulative Update 2115.00.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2013 Cumulative Update 2215.00.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2013 Cumulative Update 2315.00.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2013 Service Pack 115.00.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1015.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1115.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1215.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1315.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1415.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1515.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1615.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1715.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1815.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 1915.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 815.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 915.01.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 201915.02.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 115.02.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 215.02.0 → publicationenisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 315.02.0 → publicationenisa_euvdEU

20 von 103 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

msrc_CVE-2021-27065Microsoft Exchange Server Remote Code Execution Vulnerability2021-03-02csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu msrc_csaf NVD CVE.org MITRE

veröffentlicht 2021-03-03geändert 2026-08-19

verwandt (12,525)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-104286US	—OT kritisch	4.57% (92nd)	KEV	2026-10-01
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail…
CVE-2026-93616US	—OT kritisch	91.6% (100th)	KEV	2026-09-22
A directory traversal and file upload vulnerability allows an unauthenticated attacker to upload and execute arbitrary scripts on Check Point Management Server.
CVE-2026-85706US	—OT kritisch	97.4% (100th)	KEV	2026-09-12
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2…
CVE-2026-66384US	—OT kritisch	0.66% (52nd)	KEV	2026-08-12
An authenticated user may write data outside the intended Docker cache path under specific remote-repository conditions.
CVE-2026-59310US	—OT kritisch	2.56% (85th)	KEV	2026-07-30
VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

+12520 weitere

Referenzen (14)

Externe Belege — Patches, Meldungen, Analysen.

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