CVE-2023-22913

A post-authentication command injection vulnerability in the account_operator.cgi CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote authenticated attacker to modify device configuration data, resulting in denial-of-service (DoS) conditions on an affected device.
Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
ZyxelCNA
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVEADP
---
---
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 75%
VendorProductVersion
zyxelusg_flex_100_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_100w_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_200_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_50_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_50w_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_500_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelusg_flex_700_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelvpn100_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelvpn1000_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelvpn300_firmware
4.50 ≤
𝑥
≤ 5.35
zyxelvpn50_firmware
4.50 ≤
𝑥
≤ 5.35
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps