CVE-2021-26855
Microsoft Microsoft Exchange Server 2013 Cumulative Update 21
At a glance
- Source
- NVD
- EPSS
- EPSS 100.00 % · percentile 100 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
Weaknesses (CWE)
- CWE-918 — Server-Side Request Forgery
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26855
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855
- http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html
- http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html
- http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26855
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C | microsoft |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | HIGH 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-13639
- GCVE · GCVE-0-2021-26855
CERT-FR advisories
- CERTFR-2021-AVI-156 — Multiples vulnérabilités dans Microsoft Exchange Server · cert.ssi.gouv.fr
- CERTFR-2021-ALE-004 — [Mà J] Multiples vulnérabilités dans Microsoft Exchange Server · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:-:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*
Affected products
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |