AVTECH DVR up to 1023-1014-1017-1002-FFFF Search.cgi?action=cgi_query queryb64str os command injection

Summaryinfo

A vulnerability was found in AVTECH DVR. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the file Search.cgi?action=cgi_query. This manipulation of the argument queryb64str causes os command injection. This vulnerability is registered as CVE-2025-34054. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability has been found in AVTECH DVR and classified as critical. Affected by this vulnerability is an unknown function of the file Search.cgi?action=cgi_query. The manipulation of the argument queryb64str 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:

An unauthenticated command injection vulnerability exists in AVTECH DVR devices via Search.cgi?action=cgi_query. The use of wget without input sanitization allows attackers to inject shell commands through the username or queryb64str parameters, executing commands as root. Exploitation evidence was observed by the Shadowserver Foundation on 2025-01-04 UTC.

The weakness was published by Gergely Eberhardt as 40500. The advisory is shared at exploit-db.com. This vulnerability is known as CVE-2025-34054 since 04/15/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the databases at Exploit-DB (40500) and EUVD (EUVD-2025-19644). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• AVTECH

Name

• DVR

Version

• 1008-1002-1005-1000
• 1009-1003-1006-1001
• 1009Y-1003Y-1006Y-1001Y
• 1010-1004-1007-1001
• 1011-1005-1008-1002
• 1014-1005-1009-1002
• 1015-1006-1010-1003
• 1016-1007-1011-1003
• 1017-1008-1012-1002
• 1017Y-1008Y-1012Y-1002Y
• 1018-1008-1012-1004
• 1019-1009-1013-1003
• 1019c-1012c-1014c-1001c-FFFF
• 1022-1014-1016-1002-FFFF
• 1022Y-1014Y-1016Y-1002Y-FFFF
• 1023-1014-1017-1002-FFFF

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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