What is CVE-2021-22000?

CVE-2021-22000 is a high-severity vulnerability in VMware Thinapp, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-07-13.

How severe is CVE-2021-22000?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in VMware Thinapp

CVE-2021-22000

VMware Thinapp version 5.x prior to 5.2.10 contain a DLL hijacking vulnerability due to insecure loading of DLLs. A malicious actor with non-administrative privileges may exploit this vulnerability to elevate privileges to administrator level on the Windows operating system having VMware ThinApp installed on it.

Published 2021-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

VMware Thinapp
VMware Thinapp — versions VMware Thinapp 5.x prior to 5.2.10

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

www.vmware.com/security/advisories/VMSA-2021-0015.html (Patch, Vendor Advisory)
seclists.org/fulldisclosure/2021/Jul/35 (mailing-list, Technical Description, Exploit, Mailing List, Third Party Advisory)
packetstormsecurity.com/files/163521/VMware-ThinApp-DLL-Hijacking.html (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-22000?: CVE-2021-22000 is a high-severity vulnerability in VMware Thinapp, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-07-13.
How severe is CVE-2021-22000?: High severity. CVSS v3 base score is 7.8 out of 10.