On 2024-01-22, CISA added CVE-2023-34048 (VMware vCenter Server) to its Known Exploited Vulnerabilities (KEV) catalog [2]. The vulnerability is listed in the catalog as "VMware vCenter Server Out-of-Bounds Write Vulnerability" [2]. CISA requires applying mitigations in accordance with vendor instructions; see the full text below for specific requirements [2].
Backfill: this event became public on Jan 22, 2024 and we added it on Nov 10, 2026. It is not a new event.
CISA Adds VMware vCenter Server Vulnerability CVE-2023-34048 to Known Exploited Vulnerabilities Catalog
1 min read
- Disclosed
- Jan 22, 2024
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- 99.2%, higher than 100% of CVEs
- Exploitation and patch status
- ExploitedKEV
- Attack vector
- Vulnerability status
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Cross-industry
What to do nowOur advice
CISA requires applying mitigations in accordance with vendor instructions; see the full text for specific requirements [2].
Timeline
Technical details
CISA KEV Listing
On 2024-01-22, CISA added CVE-2023-34048 to the Known Exploited Vulnerabilities () catalog for VMware vCenter Server [2].
Original Technical Description
VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol that allows an attacker to conduct . [2]
Official Requirements
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. [2]
Individual Vulnerability Record
The U.S. National Vulnerability Database (NVD) provides an independent vulnerability record and description for CVE-2023-34048 [1].
References
Official / primary3
- [1]
“vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.”
- [2]
This site aggregates public information and is not security consulting advice. Test remediation steps before applying.