Vulnerability in VMware Horizon Client

CVE-2023-34037

VMware Horizon Server contains a HTTP request smuggling vulnerability. A malicious actor with network access may be able to perform HTTP smuggle requests.

Vulnerability class: HTTP Request Smuggling

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-34037: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

  • VMware Horizon Client — versions 2006, 2012, 2103
  • VMware Horizon Server — versions Horizon Server 2306, Horizon Server 2303, Horizon Server 2212, Horizon Server 2209, Horizon Server 2206, Horizon Server 2111.x, Horizon Server 2106, Horizon Server 2103, Horizon Server 2012, Horizon Server 2006

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-34037?
CVE-2023-34037 is a medium-severity vulnerability in VMware Horizon Client, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.3/10. Published 2023-08-04.
How severe is CVE-2023-34037?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-34037 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.