CVE-2026-51675: n/a
Description
CVE-2026-51675 is a critical vulnerability in TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It involves incorrect access control in the setWanIeCfg function, allowing unauthenticated attackers to reconfigure uplink settings by 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
This vulnerability arises from improper access control in the setWanIeCfg function of TOTOLINK T6 firmware 4.1.5cu.748_B20211015. An unauthenticated attacker can exploit this flaw by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint, enabling them to modify uplink configuration settings without authorization. The CVSS v3.1 base score is 9.1, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality and integrity.
Potential Impact
Successful exploitation allows an unauthenticated attacker to change uplink settings on the affected device, potentially compromising network configuration and security. The vulnerability does not impact availability but has high confidentiality and integrity impacts.
Mitigation Recommendations
No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the affected device's management interface and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q54q-3xc2-qwqp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51675"]
Threat ID: 6a95bf02acd9273b4966775a
Added to database: 08/31/2026, 17:50:58 UTC
Last enriched: 09/07/2026, 22:52:45 UTC
Last updated: 10/16/2026, 18:48:21 UTC
Views: 75
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