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TI-2023-06311 Aliases CVE-2023-6906

Totolink A7100RU HTTP POST Request main buffer overflow

Priority HIGH 82CWE-120Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0185 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged 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
Yes
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
TOTOLINKA7100RU7.4cu.2313_B20191024—No fix listedCNA
  • A7100RU VendorTOTOLINK Affected 7.4cu.2313_B20191024 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:a7100ru_firmware:7.4cu.2313_b20191024:*:*:*:*:*:*:*7.4cu.2313_b20191024VulnerableTOTOLINK
cpe:2.3:h:totolink:a7100ru:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:a7100ru_firmware:7.4cu.2313_b20191024:*:*:*:*:*:*:* Versions 7.4cu.2313_b20191024 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:a7100ru:-:*:*:*:*:*:*:* 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-2023-6906

References

Exploit 1

  • TI-2023-16578 TOTOLink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
  • TI-2023-14113 TOTOLINK A7100RU V7.4cu.2313_B20191024 has a Command Injection vulnerability. CVSS 3.1CRITICAL 9.8
  • TI-2023-14112 TOTOLINK A7100RU V7.4cu.2313_B20191024 is vulnerable to Command Injection. CVSS 3.1CRITICAL 9.8
  • TI-2023-11987 TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
  • TI-2023-11986 TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
  • TI-2023-11985 TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
See all 36 →

Sources

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