CVE-2022-38547: zyxel atp series firmware OS Command Injection
Vulnerability summary
CVE-2022-38547 is a high (CVSS 7.2) OS Command Injection vulnerability in zyxel atp series firmware. EPSS estimates a 2.83% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities.
Timeline
- 07-02-2023PublishedVulnerability first disclosed.
- 25-03-2025Last modifiedVulnerability information updated.
Description
A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.83%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.83% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zyxel29 products
- atp series firmware4.32 through 5.32
- atp100_firmware≥ 4.32, ≤ 5.32
- atp100w_firmware≥ 4.32, ≤ 5.32
- atp200_firmware≥ 4.32, ≤ 5.32
- atp500_firmware≥ 4.32, ≤ 5.32
1 vendor · 29 products
References
1 links- www.zyxel.com/global/…Vendor Advisory