CVE-2026-34005

HighRCE

Published: 29 March 2026

Published

29 March 2026

Modified

27 April 2026

KEV Added

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Patch

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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0009 26.0th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-34005 is a high-severity OS Command Injection (CWE-78) vulnerability in Github (inferred from references). Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked at the 26.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation of Remote Services (T1210) and 2 other techniques. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly prevents command injection by requiring validation and sanitization of untrusted HostName inputs to block shell metacharacters before execution via system().

SI-2 Flaw Remediation good match

prevent

Addresses the vulnerability through timely flaw remediation via firmware patches that fix the unsanitized system() call in the NetWork.NetCommon handler.

CM-7 Least Functionality partial match

prevent

Mitigates exposure by restricting least functionality to disable unnecessary DVRIP protocol handlers or ports like TCP 34567 on embedded devices.

MITRE ATT&CK Enterprise TechniquesAI

T1210 Exploitation of Remote Services Lateral Movement

Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.

attack.mitre.org →

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1059.004 Unix Shell Execution

Adversaries may abuse Unix shell commands and scripts for execution.

attack.mitre.org →

Why these techniques?

Vulnerability enables remote exploitation of a network service (DVRIP on TCP/34567) for root OS command injection from low-privilege access, directly facilitating T1210 (Exploitation of Remote Services), T1068 (Exploitation for Privilege Escalation), and T1059.004 (Unix Shell).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

In Sofia on Xiongmai DVR/NVR (AHB7008T-MH-V2 and NBD7024H-P) 4.03.R11 devices, root OS command injection can occur via shell metacharacters in the HostName value via an authenticated DVRIP protocol (TCP port 34567) request to the NetWork.NetCommon configuration handler, because system() is…

used.

Deeper analysisAI

CVE-2026-34005 is a root OS command injection vulnerability (CWE-78) affecting Sofia firmware version 4.03.R11 on Xiongmai DVR/NVR devices, specifically models AHB7008T-MH-V2 and NBD7024H-P. The flaw arises in the NetWork.NetCommon configuration handler, which processes HostName values over the authenticated DVRIP protocol on TCP port 34567 and uses the system() function without proper sanitization, enabling injection of shell metacharacters. Published on 2026-03-29, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), reflecting network accessibility, low attack complexity, and high potential impacts on confidentiality, integrity, and availability.

An attacker with low-privilege authenticated access can exploit the vulnerability remotely by crafting a DVRIP request containing shell metacharacters in the HostName field, leading to arbitrary root-level OS command execution. Successful exploitation grants full control over the device, potentially allowing persistence, data exfiltration, lateral movement in networks with exposed DVR/NVR systems, or use as a pivot for further attacks.

Advisories and mitigation details are available in the referenced sources, including the detailed analysis at https://uky007.github.io/CVE-2026-34005/ and the vendor site at https://www.xiongmaitech.com.