CVE-2025-29635

D-Link DIR-823X command injection, confirmed exploited in the wild.

D-Link DIR-823X contains a command injection vulnerability that allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

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88%chance of exploitation in the next 30 days (EPSS), 99th percentile

24 Apradded to CISA's Known Exploited Vulnerabilities list, 2026

8 Mayfederal remediation deadline, already passed

Passedpast the deadline: patch now

CISA's name for it	D-Link DIR-823X Command Injection Vulnerability
Vendor and product	D-Link · DIR-823X
Type	command injection · CWE-77
Exploited	Confirmed by CISA listed 24 April 2026
Likelihood	one of the most likely to be exploited of every vulnerability tracked
Deadline	8 May 2026 · already passed
Used in ransomware	Not reported
Advisories	supportannouncement.us.dlink.com ↗ · nvd.nist.gov ↗

What to do

Three steps, in this order

Step 1

Apply the vendor fix; command injection on an exposed device is used within days of disclosure.

Step 2

Restrict the management interface to a trusted network until the fix is in.

Step 3

Review the device's logs and configuration for changes you did not make.

CISA's required action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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Questions

CVE-2025-29635 in short

Is CVE-2025-29635 being exploited?

Yes. CISA added CVE-2025-29635 to its Known Exploited Vulnerabilities catalogue on 24 April 2026, which it does only on evidence of exploitation in the wild.

What is the CISA deadline for CVE-2025-29635?

US federal agencies must remediate it by 8 May 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.

How likely is CVE-2025-29635 to be exploited in the next 30 days?

FIRST's Exploit Prediction Scoring System gives it 88%, the 99th percentile of every CVE it scores.

How do I fix CVE-2025-29635?

Apply the vendor fix; command injection on an exposed device is used within days of disclosure. Restrict the management interface to a trusted network until the fix is in. Review the device's logs and configuration for changes you did not make.

Same vendor

Other D-Link vulnerabilities being exploited

CVE	Product	Type	Listed
CVE-2022-37055	Routers	memory corruption	8 December 2025

Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.