Privilege escalation in Zyxel Atp Series Firmware
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 FL…
Vulnerability class: Privilege Escalation
EPSS: 0.025 (85.7th percentile) — read the EPSS interpretation.
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.
Affected products
- Zyxel Atp Series Firmware — versions 4.32 through 5.30
- Zyxel Usg 20(w)-vpn Firmware — versions 4.16 through 5.30
- Zyxel Usg Flex 100(w) Firmware — versions 4.50 through 5.30
- Zyxel Usg Flex 200 Firmware — versions 4.50 through 5.30
- Zyxel Usg Flex 500 Firmware — versions 4.50 through 5.30
- Zyxel Usg Flex 50(w) Firmware — versions 4.16 through 5.30
- Zyxel Usg Flex 700 Firmware — versions 4.50 through 5.30
- Zyxel Usg/zywall Series Firmware — versions 4.09 through 4.72
- Zyxel Vpn Series Firmware — versions 4.30 through 5.30
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal… (x_refsource_CONFIRM)
- packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escal… (x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-30526?
- CVE-2022-30526 is a high-severity vulnerability in Zyxel Atp Series Firmware, 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.