Dir 823x Firmware
CVE-2026-2129
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as high-privilege user
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ExploitSend crafted request to /goform/set_ac_status
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ExecutionInject OS commands in ac_ipaddr/ac_ipstatus/ap_randtime parameters
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ImpactExecute arbitrary commands with device privileges
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | D-Link DIR-823X firmware 250416; attacker must possess high-privilege credentials (admin account); /goform/set_ac_status endpoint must be accessible; no default authentication bypass present — requires valid administrative access to exploit command injection. |
| Impact | CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitable via remote/network. Public exploit/POC available. |
| Exploit ScenarioDerived | A remote attacker could exploit this flaw, os command injection. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Unauthenticated remote attackers can execute arbitrary OS commands on D-Link DIR-823X routers through command injection in the /goform/set_ac_status endpoint via manipulation of ac_ipaddr, ac_ipstatus, or ap_randtime parameters. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.
Earlier versions of this analysis (1)
A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. [CVSS 7.2 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-77 (Command Injection). Affects Dir-823X Firmware. A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability was found in D-Link DIR-823X 250416. Affected by this issue is some unknown functionality of the file /goform/set_ac_status. Performing a manipulation of the argument ac_ipaddr/ac_ipstatus/ap_randtime results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.
Executive ViewAI
A high-severity vulnerability in D-Link DIR-823X routers allows potential unauthorized access to network devices through a vulnerable web interface endpoint. Organizations using affected D-Link models face immediate risk of device compromise, which could enable lateral movement within networks and compromise network infrastructure integrity.
Implement WAF rules blocking access to /goform/set_ac_status endpoint; restrict router administrative access to whitelisted IP addresses only; disable UPnP and remote management features if enabled; monitor router access logs for suspicious requests; segment router management traffic on isolated VLANs; consider disabling the AC status feature if not operationally critical; implement intrusion detection rules for exploitation attempts.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)CVE.org
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