CVE-2025-29635
D-Link DIR-823X Command Injection Vulnerability
D-Link DIR-823X
A command injection vulnerability in D-Link DIR-823X 240126 and 240802 allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function, triggering remote command execution.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 24 April 2026. US federal agencies were required to remediate it by 8 May 2026.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 87.9%, which is higher than 99.8% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2025-29635 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2025-29635.
What does CVE-2025-29635 affect?
CVE-2025-29635 affects D-Link DIR-823X. A command injection vulnerability in D-Link DIR-823X 240126 and 240802 allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function, triggering remote command execution.
How severe is CVE-2025-29635?
CVE-2025-29635 is rated HIGH with a CVSS base score of 7.2. EPSS puts the probability of exploitation in the next 30 days at 87.9%, higher than 99.8% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 8 May 2026.
How should organisations respond to CVE-2025-29635?
Apply the vendor patch for D-Link DIR-823X as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.