SARA / Free Tools / CVE / CVE-2023-34048

CVE-2023-34048 — VMware vCenter Server Out-of-Bounds Write Vulnerability

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.

CVSS
9.8 CRITICAL
EPSS
93.21% (top 0.20%)
CWE
Published
2023-10-25T04:21:42.267Z
Last modified
2025-10-21T23:05:33.739Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA KEV — Actively Exploited
Added to KEV
2024-01-22
BOD 22-01 due
2024-02-12
Ransomware use
Unknown

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
VMwareVMware vCenter Server8.0, 7.0
VMwareVMware Cloud Foundation (VMware vCenter Server)5.x, 4.x

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2024-01-22. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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