CVE-2023-34037

MEDIUMNVD 5.35.3—

5.3

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

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 76.9%
KEV: Not listed

Published

August 4, 2023

Last Modified

November 21, 2024

References (2)

security@vmwarehttps://www.vmware.com/security/advisories/VMSA-2023-0017.html
af854a3a-2127-422b-91ae-364da2661108https://www.vmware.com/security/advisories/VMSA-2023-0017.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-444Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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Frequently asked(5)

What is CVE-2023-34037?

CVE-2023-34037 is a medium vulnerability published on August 4, 2023. VMware Horizon Server contains a HTTP request smuggling vulnerability. A malicious actor with network access may be able to perform HTTP smuggle requests.

When was CVE-2023-34037 disclosed?

CVE-2023-34037 was first published in the National Vulnerability Database on August 4, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-34037 actively exploited?

CVE-2023-34037 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-34037?

CVE-2023-34037 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2023-34037?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-34037, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-34037

📅 Published

🔄 Last Modified

🔗 References (2)