TOTOLINK X2000R: OS command injection in formMapDelDevice via macstr
Summary
The web administration interface (boa, formMapDelDevice handler) of the TOTOLINK X2000R router passes the POST parameter macstr unsanitized to a system command. An attacker who is logged in can send a crafted HTTP request and execute arbitrary operating system commands on the router. The attacker needs valid credentials, and the advisory states that PR:H (high privileges) applies in the CVSS vector.
Affected
- TOTOLINK X2000R, firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 (only build listed in the sources)
- Other firmware builds: Unknown.
Fixed in
Unknown. No vendor advisory or patched firmware version found.
Workaround
- No solution or workaround provided in the CVE record.
- Restrict or disable web management and remote administration.
- Keep the management interface off the WAN side.
- Change default administrator credentials to strong, unique passwords.
Exploitation
- CISA KEV: No.
- Public exploit: None found as of the last source update (VulDB).
- EPSS: about 1% (low).
- CISA SSVC: Exploitation none, Automatable no, Technical impact total.
Our recommendation
- Check whether TOTOLINK X2000R devices are in use and whether they run the listed firmware build.
- Disable remote administration and keep the admin interface in the LAN only.
- Use strong, unique admin passwords and review existing accounts.
- Check with TOTOLINK or the reseller for a firmware update and apply it as soon as one is available.
- Monitor the router for unexpected configuration changes or outbound connections.
- Priority: medium-high if the admin page is reachable from the internet or passwords are weak; medium if LAN-only with strong credentials.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Cisco Talos TALOS-2026-2391 talosintelligence.com
- OpenCVE CVE-2026-33568 app.opencve.io
- VulDB 423046 vuldb.com
- Strix CVE-2026-33568 www.strix.ai
- Vulners TALOS-2026-2391 mirror vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 06:02.
Original description (NVD)
A OS command injection vulnerability exists in the boa formMapDelDevice macstr functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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