Zyxel VMG8825-T50K up to V5.50(ABOM.8.5)C0 diagnostic DNSServer os command injection

Summaryinfo

A vulnerability was found in Zyxel VMG8825-T50K up to V5.50(ABOM.8.5)C0. It has been rated as critical. The affected element is the function diagnostic. This manipulation of the argument DNSServer causes os command injection. This vulnerability appears as CVE-2024-11253. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Zyxel VMG8825-T50K up to V5.50(ABOM.8.5)C0 and classified as critical. Affected by this vulnerability is the function diagnostic. The manipulation of the argument DNSServer with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.

The advisory is shared at zyxel.com. This vulnerability is known as CVE-2024-11253 since 11/15/2024. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/13/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Zyxel

Name

• VMG8825-T50K

Version

• V5.50(ABOM.8.5)C0

License

• commercial

Website

• Vendor: https://www.zyxel.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion