Cyber Resilience

CVE-2026-8273

MediumPublic PoC

Published: 11 May 2026

Published
11 May 2026
Modified
11 May 2026
KEV Added
—
Patch
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CVSS Score v4 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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 0.0012 31.0th percentile
Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-8273 is a medium-severity Command Injection (CWE-77) vulnerability in Dlink Dns-320 Firmware. Its CVSS base score is 5.1 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 31.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A weakness has been identified in D-Link DNS-320 2.06B01. This impacts the function cgi_set_host/cgi_set_ntp/cgi_fan_control/cgi_merge_user of the file /cgi-bin/system_mgr.cgi. This manipulation causes os command injection. It is possible to initiate the attack remotely.

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?

Remote OS command injection in public-facing CGI directly enables T1190; resulting shell command execution maps to T1059.004 on the Linux-based device.

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

CVEs Like This One

CVE-2026-8272Same product: Dlink Dns-320
CVE-2026-8271Same product: Dlink Dns-320
CVE-2026-2260Same vendor: Dlink
CVE-2026-4465Same vendor: Dlink
CVE-2026-2210Same vendor: Dlink
CVE-2026-2151Same vendor: Dlink
CVE-2026-2157Same vendor: Dlink
CVE-2026-2129Same vendor: Dlink
CVE-2026-2143Same vendor: Dlink
CVE-2026-2084Same vendor: Dlink

Affected Assets

dlink
dns-320 firmware
2.06b01

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.

SC-27 Platform-independent Applications
addresses: CWE-78

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.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References