CVE-2021-34473
critical · 9.1Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
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Added 2021-11-03Remediation due 2021-11-17
A public exploit / detection template exists
Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →
Microsoft Exchange Server Remote Code Execution Vulnerability
9.1
CVSS
100.0%
EPSS (exploit prob.)
100th
EPSS percentile
2021-07-14
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-918
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | exchange_server | 2013 |
| microsoft | exchange_server | 2016 |
| microsoft | exchange_server | 2016 |
| 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-2021-34473
- http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34473
- https://www.zerodayinitiative.com/advisories/ZDI-21-821/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-34473
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-34473