VDB
CVE-2023-21529
CVE-2023-21529
PUBLISHED
CVSS 8.8 HIGH
Microsoft Exchange Server Remote Code Execution Vulnerability
Reported by microsoft · Published February 14, 2023
Microsoft Exchange Server Remote Code Execution Vulnerability
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Microsoft Exchange Server 2019 Cumulative Update 12 | Microsoft | 15.02.1118.025 |
| Microsoft Exchange Server 2013 Cumulative Update 23 | Microsoft | 15.00.1497.047 |
Risk scores
CVSS 3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 | 15.02.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 12 | 15.02.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 12 | 15.02.0 |
| microsoft | exchange_server | 15.02.0, 15.00.0, 15.01.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 | 15.02.0 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 |
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 |
Timeline
- Feb 14, 2023 CVE Published
- Feb 15, 2023 EPSS Score (30 in total, the first dated here)
- Feb 22, 2023 PoC Published (22 in total, the first dated here)
- Apr 6, 2026 VulnCheck KEV Exploitation (2 in total, the first dated here)
- Apr 13, 2026 CISA KEV Added
- May 5, 2026 Security Advisory (6 in total, the first dated here)
- May 20, 2026 Coalition ESS Score
- Aug 19, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2023-21529
vulnetix vdb fixes CVE-2023-21529Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2023-21529/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- Microsoft Exchange Server Remote Code Execution Vulnerability vendor-advisorypatch
- https://www.microsoft.com/en-us/security/blog/2026/04/06/storm-1175-focuses-gaze-on-vulnerable-web-facing-assets-in-high-tempo-medusa-ransomware-operations/ vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21529 url