Cyber Resilience

CVE-2026-2175

HighPublic PoCRCE

Published: 08 February 2026

Published
08 February 2026
Modified
11 February 2026
KEV Added
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Patch
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CVSS Score v4 7.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0075 73.5th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-2175 is a high-severity Command Injection (CWE-77) vulnerability in Dlink Dir-823X Firmware. Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 26.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

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

Deeper analysis

CVE-2026-2175 is an OS command injection vulnerability (CWE-77, CWE-78) affecting the D-Link DIR-823X router running firmware version 250416. The flaw exists in the sub_420618 function of the /goform/set_upnp file, where manipulation of the upnp_enable argument triggers command injection. Published on 2026-02-08, it carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Attackers with high privileges can exploit this vulnerability remotely over the network with low attack complexity and no user interaction. Successful exploitation enables arbitrary OS command execution, resulting in high impacts to confidentiality, integrity, and availability on the affected device.

Advisories from VulDB and a GitHub issue confirm remote exploitation is feasible, with a public exploit available that could be leveraged in attacks. Additional references point to D-Link's site, though specific patch details are not detailed in the provided sources.

EU & UK References

Vulnerability details

A weakness has been identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_420618 of the file /goform/set_upnp. This manipulation of the argument upnp_enable causes os command injection. Remote exploitation of the attack is possible. The exploit has been…

more

made available to the public and could be used for attacks.

CWE(s)
CWE-77CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

OS command injection in public-facing router web form directly enables remote exploitation of the application (T1190) and arbitrary Unix shell command execution (T1059.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2026-2210Same product: Dlink Dir-823X
CVE-2026-2157Same product: Dlink Dir-823X
CVE-2026-2129Same product: Dlink Dir-823X
CVE-2026-2143Same product: Dlink Dir-823X
CVE-2026-2084Same product: Dlink Dir-823X
CVE-2026-2063Same product: Dlink Dir-823X
CVE-2026-2155Same product: Dlink Dir-823X
CVE-2026-2142Same product: Dlink Dir-823X
CVE-2026-2081Same product: Dlink Dir-823X
CVE-2025-29635Same product: Dlink Dir-823X

Affected Assets

dlink
dir-823x firmware
250416

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly blocks OS command injection by validating/sanitizing the upnp_enable argument before it reaches sub_420618 in /goform/set_upnp.

SI-2 Flaw Remediation good match
prevent

Requires timely application of vendor patches to eliminate the publicly disclosed command-injection flaw in firmware 250416.

AC-6 Least Privilege partial match
prevent

Limits the high-privilege accounts (PR:H) that can reach the vulnerable set_upnp endpoint, reducing the population able to trigger injection.

References