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TI-2025-05801 Aliases CVE-2025-6400GHSA-4f49-fqv9-jwhv

TOTOLINK N300RH HTTP POST Message formPortFw 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 vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formPortFw of the component HTTP POST Message Handler. The manipulation of the argument service_type leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00984 62nd 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
TOTOLINKN300RH6.1c.1390_B20191101—No fix listedCNA
  • N300RH VendorTOTOLINK Affected 6.1c.1390_B20191101 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1390_b20191101:*:*:*:*:*:*:*6.1c.1390_b20191101VulnerableTOTOLINK
cpe:2.3:h:totolink:n300rh:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:n300rh_firmware:6.1c.1390_b20191101:*:*:*:*:*:*:* Versions 6.1c.1390_b20191101 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:n300rh:-:*:*:*:*:*:*:* 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-2025-6400
  2. 2026-10-03 Alias added: GHSA-4f49-fqv9-jwhv

References

Exploit 2

Other 1

  • TI-2026-02851 Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection CVSS 4.0CRITICAL 9.3
  • TI-2026-03188 Totolink N300RH CGI cstecgi.cgi setWiFiWpsConfig os command injection CVSS 4.0MEDIUM 6.9
  • TI-2025-05802 TOTOLINK N300RH HTTP POST Message formFilter denial of service CVSS 4.0MEDIUM 5.1
  • TI-2025-04346 TOTOLINK N300RH cstecgi.cgi setUploadUserData command injection CVSS 4.0MEDIUM 5.3
  • TI-2025-04345 TOTOLINK N300RH cstecgi.cgi setUnloadUserData command injection CVSS 4.0MEDIUM 5.3
  • TI-2025-04344 TOTOLINK N300RH cstecgi.cgi CloudACMunualUpdateUserdata command injection CVSS 4.0MEDIUM 5.3

Sources

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