What is CVE-2022-33158?

CVE-2022-33158 is a high-severity vulnerability in Microsoft Windows, classified under Files or Directories Accessible to External Parties. CVSS score: 7.8/10. Published 2022-07-30.

How severe is CVE-2022-33158?

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

Vulnerability in Microsoft Windows

CVE-2022-33158

Trend Micro VPN Proxy Pro version 5.2.1026 and below contains a vulnerability involving some overly permissive folders in a key directory which could allow a local attacker to obtain privilege escalation on an affected system.

Published 2022-07-30 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.003 (25.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001

Affected products

Microsoft Windows
Trend Micro Vpn Proxy One Pro (Consumer) — versions 5.2.1026 and below
Trendmicro Vpn Proxy One Pro

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

helpcenter.trendmicro.com/en-us/article/tmka-11042 (Vendor Advisory)
www.zerodayinitiative.com/advisories/ZDI-22-853/ (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2022-33158?: CVE-2022-33158 is a high-severity vulnerability in Microsoft Windows, classified under Files or Directories Accessible to External Parties. CVSS score: 7.8/10. Published 2022-07-30.
How severe is CVE-2022-33158?: High severity. CVSS v3 base score is 7.8 out of 10.