CVE-2021-27065
high · 7.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply updates per vendor instructions.
Added 2021-11-03Remediation due 2022-05-03
Microsoft Exchange Server Remote Code Execution Vulnerability
7.8
CVSS
99.9%
EPSS (exploit prob.)
100th
EPSS percentile
2021-03-03
Published
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-22
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | exchange_server | 2013 |
| microsoft | exchange_server | 2013 |
| microsoft | exchange_server | 2013 |
| microsoft | exchange_server | 2013 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
| microsoft | exchange_server | 2019 |
Check a specific version with /api/v1/cve/match.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27065
- http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-27065