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

criticalknown exploitedpublic exploitCVE-2023-34048
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol that allows an attacker to conduct remote code execution.

CSIRTS triage

vendor: VMwareproduct: vCenter ServerRemote code execution
What
An out-of-bounds write vulnerability allows an attacker to conduct remote code execution.
Who is affected
Deployments of VMware vCenter Server.
Urgency
Remediation is critical due to active exploitation and high severity.
Action
Install the security update provided by VMware.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-01-22
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-34048

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-34048coverage & exploitation statusNVD · CVE.org

Recent advisories for VMware vCenter Server

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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