How severe is CVE-2023-20893?

CVE-2023-20893 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-20893 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20893?

CVE-2023-20893 primarily affects Vmware Vcenter Server. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20893?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-20893 published?

CVE-2023-20893 was published on 2023-06-22 and last updated on 2026-06-17.

CVE-2023-20893

CVE-2023-20893 is a high-severity vulnerability in Vmware Vcenter Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Vmware Vcenter Server
Published: 2023-06-22
Last modified: 2026-06-17

Description

The VMware vCenter Server contains a use-after-free vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may exploit this issue to execute arbitrary code on the underlying operating system that hosts vCenter Server.

Frequently asked questions

What is CVE-2023-20893?: The VMware vCenter Server contains a use-after-free vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may exploit this issue to execute arbitrary code on the underlying operating system that hosts vCenter Server.
How severe is CVE-2023-20893?: CVE-2023-20893 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-20893 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20893?: CVE-2023-20893 primarily affects Vmware Vcenter Server. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20893?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-20893 published?: CVE-2023-20893 was published on 2023-06-22 and last updated on 2026-06-17.

References

Affected products (33)

cpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update2d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3d:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3e:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3f:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3g:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3h:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3i:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3j:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3k:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3l:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:-:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:a:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1a:*:*:*:*:*:*

More vulnerabilities in Vmware Vcenter Server

CVE-2015-2342 — Critical (CVSS 10.0): The JMX RMI service in VMware vCenter Server 5.0 before u3e, 5.1 before u3b, 5.5 before u3, and 6.0 before u1 does not…
CVE-2013-1405 — Critical (CVSS 10.0): VMware vCenter Server 4.0 before Update 4b and 4.1 before Update 3a, VMware VirtualCenter 2.5, VMware vSphere Client…
CVE-2024-38812 — Critical (CVSS 9.8): The vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious…
CVE-2024-37080 — Critical (CVSS 9.8): vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious actor…
CVE-2024-37079 — Critical (CVSS 9.8): vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious actor…
CVE-2023-34048 — Critical (CVSS 9.8): vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious…

All CVEs affecting Vmware Vcenter Server →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →