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TI-2026-01369 Aliases CVE-2026-1686GHSA-2xxq-pq3h-297f

Totolink A3600R app.so setAppEasyWizardConfig buffer overflow

Priority HIGH 73CWE-119Published · 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
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A security flaw has been discovered in Totolink A3600R 5.9c.4959. This issue affects the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. Performing a manipulation of the argument apcliSsid results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0078 56th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
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
TOTOLINKA3600R5.9c.4959—No fix listedCNA
  • A3600R VendorTOTOLINK Affected 5.9c.4959 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:a3600r_firmware:5.9c.4959:*:*:*:*:*:*:*5.9c.4959VulnerableTOTOLINK
cpe:2.3:h:totolink:a3600r:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:a3600r_firmware:5.9c.4959:*:*:*:*:*:*:* Versions 5.9c.4959 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:a3600r:-:*:*:*:*:*:*:* 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-2026-1686
  2. 2026-10-03 Alias added: GHSA-2xxq-pq3h-297f

References

Exploit 2

Other 1

  • TI-2026-23826 TOTOlink A3600R v5.9c.4959 contains a buffer overflow vulnerability in the… CVSS 3.1CRITICAL 9.8
  • TI-2024-06654 TOTOLINK A3600R cstecgi.cgi UploadCustomModule buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06652 TOTOLINK A3600R cstecgi.cgi setWebWlanIdx buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06651 TOTOLINK A3600R cstecgi.cgi setUrlFilterRules buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06650 TOTOLINK A3600R cstecgi.cgi setUploadSetting buffer overflow CVSS 4.0HIGH 8.7
  • TI-2024-06649 TOTOLINK A3600R cstecgi.cgi setUpgradeFW buffer overflow CVSS 4.0HIGH 8.7
See all 24 →

Sources

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