CVE-2025-34056
Published: 01 July 2025
Summary
CVE-2025-34056 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Avtech (inferred from references). Its CVSS base score is 9.4 (Critical).
Operationally, ranked in the top 15.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
An OS command injection vulnerability exists in AVTECH IP camera, DVR, and NVR devices via the PwdGrp.cgi endpoint used for user and group management. Authenticated users can pass unsanitized input through the pwd or grp parameters, which are directly incorporated into system commands and enable arbitrary shell execution with root privileges. The issue is tracked under CVE-2025-34056 with a CVSS 4.0 score of 9.4 and maps to CWE-20 and CWE-78.
Attackers with valid credentials on an exposed device can exploit the flaw over the network to run commands, fully compromising confidentiality, integrity, and availability of the affected appliance and any connected systems. The vector requires low attack complexity and no user interaction beyond authentication.
Public references include a VulnCheck advisory, archived reports from Search-Lab and GitHub, and an Exploit-DB entry, though none of the listed sources detail specific patches or configuration mitigations. The associated EPSS score remains flat at 0.0204 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19642
Vulnerability details
An OS command injection vulnerability exists in AVTECH IP camera, DVR, and NVR devices via the PwdGrp.cgi endpoint, which handles user and group management operations. Authenticated users can supply input through the pwd or grp parameters, which are directly embedded…
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into system commands without proper sanitation. This allows for the execution of arbitrary shell commands with root privileges.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Directly implements checks on information inputs to reject invalid data before processing.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.