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TI-2021-19504 Aliases CVE-2021-43664GHSA-669g-cwhp-9qg2

totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection…

Priority LOW 39CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.

Summary

totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection vulnerability via the component process forceugpo.

Why it matters now

EPSS 0.01666 76th 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

Not available: CISA has not published SSVC decision points for this record.

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:ex300_v2_firmware:4.0.3c.140_b20210429:*:*:*:*:*:*:*4.0.3c.140_b20210429VulnerableTOTOLINK
cpe:2.3:h:totolink:ex300_v2:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:ex300_v2_firmware:4.0.3c.140_b20210429:*:*:*:*:*:*:* Versions 4.0.3c.140_b20210429 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:ex300_v2:-:*:*:*:*:*:*:* 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-2021-43664
  2. 2026-10-03 Alias added: GHSA-669g-cwhp-9qg2

References

Exploit 1

  • TI-2022-14105 TOTOLINK EX300_V2 V4.0.3c.7484 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
  • TI-2022-08789 totolink EX300_v2 V4.0.3c.140_B20210429 and EX1200T V4.1.2cu.5230_B20210706 does not… CVSS 3.1HIGH 8.8
  • TI-2021-19503 totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection… CVSS 3.1HIGH 7.5
  • TI-2021-19502 totolink EX300_v2, ver V4.0.3c.140_B20210429 and A720R ,ver V4.1.5cu.470_B20200911 have… CVSS 3.1MEDIUM 6.5
  • TI-2021-19501 totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a reflected cross-site… CVSS 3.1MEDIUM 6.1

Sources

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