Command Injection in D-Link DIR-823X /goform/set_prohibiting
CVE-2025-29635 is a command injection vulnerability affecting D-Link DIR-823X routers, including firmware versions 240126 and 240802/24082 as reported in the provided sources. The flaw is present in the router management interface endpoint /goform/set_prohibiting. According to the supplied analysis, attacker-controlled input is incorporated into a shell command via snprintf() and then executed through system() without proper sanitization or validation. Researchers specifically noted that attacker-controlled data reaches the vulnerable code path in a function identified during reverse engineering as sub_42232C, enabling shell metacharacter injection and arbitrary operating system command execution on the device. The issue has been observed in active exploitation by Mirai operators targeting internet-exposed, legacy/end-of-life DIR-823X devices.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
48 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
A command-injection vulnerability in legacy D-Link DIR-823X routers that allows remote arbitrary OS command execution via a crafted POST request to /goform/set_prohibiting, enabling automated compromise of internet-exposed devices.
A command injection vulnerability in the D-Link DIR-823X router management interface that allows arbitrary OS command execution and can lead to full router compromise, traffic interception, persistence, lateral movement, and botnet recruitment.
A command injection vulnerability in D-Link DIR-823X caused by improper validation of attacker-controlled input, allowing attackers to inject commands.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.