How severe is CVE-2023-34056?

CVE-2023-34056 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-34056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34056?

CVE-2023-34056 primarily affects Vmware Vcenter Server. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-34056?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-34056 published?

CVE-2023-34056 was published on 2023-10-25 and last updated on 2026-06-17.

CVE-2023-34056

CVE-2023-34056 is a medium-severity vulnerability in Vmware Vcenter Server with a CVSS 3.x base score of 4.3. 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-922.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-922
Affected product: Vmware Vcenter Server
Published: 2023-10-25
Last modified: 2026-06-17

Description

vCenter Server contains a partial information disclosure vulnerability. A malicious actor with non-administrative privileges to vCenter Server may leverage this issue to access unauthorized data.

Frequently asked questions

What is CVE-2023-34056?: vCenter Server contains a partial information disclosure vulnerability. A malicious actor with non-administrative privileges to vCenter Server may leverage this issue to access unauthorized data.
How severe is CVE-2023-34056?: CVE-2023-34056 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-34056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34056?: CVE-2023-34056 primarily affects Vmware Vcenter Server. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-34056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-34056 published?: CVE-2023-34056 was published on 2023-10-25 and last updated on 2026-06-17.

References

https://www.vmware.com/security/advisories/VMSA-2023-0023.html

Affected products (38)

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:7.0:update3m:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:7.0:update3n:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1b:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1c:*:*:*:*:*:*
cpe:2.3:a:vmware:vcenter_server:8.0:update1d:*:*:*:*:*:*

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