CVE-2026-51622: n/a
Description
Incorrect access control in the getWanCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain WAN configuration data via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-51622 affects the TOTOLINK T6 router firmware version 4.1.5cu.748_B20211015. Due to improper access control in the getWanCfg function, an unauthenticated attacker can send a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint and obtain sensitive WAN configuration data. This flaw corresponds to CWE-284 (Improper Access Control) and allows full confidentiality and integrity compromise of WAN configuration settings without authentication or user interaction.
Potential Impact
Successful exploitation allows an unauthenticated attacker to access WAN configuration data, potentially exposing sensitive network configuration details. The CVSS score of 9.1 reflects critical impact on confidentiality and integrity, but no impact on availability. This could facilitate further attacks or network reconnaissance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, restrict access to the affected device's management interface and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a91e404acd9273b4942e718
Added to database: 08/28/2026, 19:39:48 UTC
Last enriched: 09/07/2026, 14:33:06 UTC
Last updated: 10/10/2026, 18:48:20 UTC
Views: 29
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