Privilege escalation in Zyxel Atp100
CVE-2022-30526
A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.
Vulnerability class: Privilege Escalation
Published · last modified .
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: 0.011 (66.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal… (Vendor Advisory)
- packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escal… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-30526?
- CVE-2022-30526 is a high-severity vulnerability in Zyxel Atp100, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2022-07-19.
- How severe is CVE-2022-30526?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-30526 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.