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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2023-34048- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2023-38166
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.
- Record
EUVD-2023-38166- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-87j2-5g9j-7jmv
vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC...
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.
- Record
GHSA-87j2-5g9j-7jmv- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
CISA KEV No score
VMware vCenter Server Out-of-Bounds Write Vulnerability
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.
- Record
CVE-2023-34048- Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-34048- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | VMware vCenter Server - Out-of-Bounds Write |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-34048 is a critical vulnerability (CVSS 9.8) in Vmware Vcenter Server, published October 25, 2023. CISA lists it as known to be exploited, since January 22, 2024. EUVD reports exploitation since January 22, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 99.2%, the 99th percentile. No source names a fixed version.
References
vmware.com/security/advisories/VMSA-2023-0023.html
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-34048
vicarius.io/vsociety/posts/understanding-cve-2023-34048-a-zero-day-out-of-bound-write-in-vcenter-server
nvd.nist.gov/vuln/detail/CVE-2023-34048
github.com/advisories/GHSA-87j2-5g9j-7jmv