CVE-2023-34048
VMware vCenter Server Out-of-Bounds Write Vulnerability
Published Oct 25, 2023 · corrected/updated Jun 16, 2026 · vmware vcenter server · evidence confidence very high
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2023-34048 is a critical public vulnerability record for vmware vcenter server. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether vmware vcenter server is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: vmware/vcenter server; vmware/vcenter server (7.0); VMware vCenter Server. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.8, EPSS 99.4%. CISA lists it as known exploited. Weakness classes: CWE-787. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Confirmed in CISA KEV since Jan 22, 2024. Listed in the CISA Known Exploited Vulnerabilities catalog.
Patch and remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Feb 12, 2024.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 25, 2023 · Catalog
Detected
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.
Jan 22, 2024 · CISA KEV
Known exploited
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Feb 12, 2024 · CISA KEV
Remediation due
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jun 16, 2026 · Catalog
Updated
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.
Affected
- cpe vmware/vcenter serverversion unspecified
- cpe vmware/vcenter server7.0
- vendor VMware vCenter Serverversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2023-34048
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.
cisa.gov - CVE.orgVulnerability recordCVE-2023-34048
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-34048
30-day exploitation probability 99.4%
first.org - NIST NVDVulnerability recordCVE-2023-34048
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.
nvd.nist.gov