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TI-2026-01309 Aliases CVE-2026-1623GHSA-rjqr-3rwj-fv3p

Totolink A7000R cstecgi.cgi setUpgradeFW command injection

Priority MEDIUM 57CWE-74Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A weakness has been identified in Totolink A7000R 4.1cu.4154. Impacted is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument FileName causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02388 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TOTOLINKA7000R4.1cu.4154—No fix listedCNA
  • A7000R VendorTOTOLINK Affected 4.1cu.4154 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:*4.1cu.4154VulnerableTOTOLINK
cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:a7000r_firmware:4.1cu.4154:*:*:*:*:*:*:* Versions 4.1cu.4154 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:a7000r:-:*:*:*:*:*:*:* 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-2026-1623
  2. 2026-10-03 Alias added: GHSA-rjqr-3rwj-fv3p

References

Exploit 2

Other 1

  • TI-2024-18932 Buffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R… CVSS 3.1CRITICAL 9.8
  • TI-2023-26994 TOTOLink A7000R V9.1.0u.6115_B20201022 has a stack overflow vulnerability via setOpModeCfg. CVSS 3.1CRITICAL 9.8
  • TI-2024-06678 TOTOLINK A7000R cstecgi.cgi setWizardCfg buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06677 TOTOLINK A7000R cstecgi.cgi loginauth buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-39335 Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the… CVSS 3.1HIGH 7.5
  • TI-2025-39334 Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the… CVSS 3.1HIGH 7.5
See all 34 →

Sources

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