Home/CVE/Certain Zyxel products allow command injection by an admin via an input string to chg_exp_pwd during a password-change a
CVE

CVE-2020-29299

Certain Zyxel products allow command injection by an admin via an input string to chg_exp_pwd during a password-change a

Certain Zyxel products allow command injection by an admin via an input string to chg_exp_pwd during a password-change action. This affects VPN On-premise before ZLD V4.39 week38, VPN Orchestrator before SD-OS V10.03 week32, USG before ZLD V4.39 week38, USG FLEX before ZLD V4.55 week38, ATP before ZLD V4.55 week38, and NSG before 1.33 patch 4.

HIGH · CVSS 7.2 EPSS 0.0361
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
▤

Affected Products & Versions

6
zyxel vpn orchestrator< 10.03
zyxel zld< 4.39
zyxel zld< 4.55
zyxel nsg firmware< 1.33
zyxel nsg firmwareall versions
zyxel usg flex firmwareall versions
▣

Scoring & Timeline

7.2
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Dec 2020 · 06:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.zyxel.com/support/Zyxel-security-advisory-for-command-injection-vulnerability-of-firewalls.shtmlVendor Advisory
https://www.zyxel.com/us/en/support/security_advisories.shtmlVendor Advisory
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