Command Injection Vulnerability in Zyxel NAS Products
CVE-2023-35138

9.8CRITICAL

Key Information:

Vendor
Zyxel
Status
NAS326 firmware
NAS542 firmware
Vendor
CVE Published:
30 November 2023

Summary

A command injection vulnerability exists in the Zyxel NAS326 and NAS542 firmware that may allow unauthorized users to execute arbitrary operating system commands. This weakness is realized through the 'show_zysync_server_contents' function, which becomes exploitable if manipulated via a specially crafted HTTP POST request. Attackers could leverage this flaw to gain control over system operations, posing significant risks to data integrity and confidentiality.

Affected Version(s)

NAS326 firmware V5.21(AAZF.14)C0

NAS542 firmware V5.21(ABAG.11)C0

References

https://www.zyxel.com/global/en/support/security-advisori...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.