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TI-2024-20941 Aliases CVE-2024-31809GHSA-75cq-q7qc-2mc2

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution…

Priority HIGH 73CWE-75Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution (RCE) vulnerability via the FileName parameter in the setUpgradeFW function.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00979 62nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:ex200_firmware:4.0.3c.7646_b20201211:*:*:*:*:*:*:*4.0.3c.7646_b20201211VulnerableTOTOLINK
cpe:2.3:h:totolink:ex200:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:ex200_firmware:4.0.3c.7646_b20201211:*:*:*:*:*:*:* Versions 4.0.3c.7646_b20201211 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:ex200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-31809
  2. 2026-10-03 Alias added: GHSA-75cq-q7qc-2mc2

References

Exploit 1

  • TI-2024-20942 TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample. CVSS 3.1CRITICAL 9.8
  • TI-2024-20939 TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution… CVSS 3.1CRITICAL 9.8
  • TI-2024-20946 TOTOLINK EX200 V4.0.3c.7646_B20201211 allows attackers to bypass login through the Form_Login function. CVSS 3.1HIGH 8.8
  • TI-2024-20940 TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution… CVSS 3.1HIGH 8.8
  • TI-2024-06797 TOTOLINK EX200 cstecgi.cgi loginauth buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06796 TOTOLINK EX200 getSaveConfig buffer overflow CVSS 4.0HIGH 8.7
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences