CVE-2026-51715: n/a
Description
Incorrect access control in the delMacFilterRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to remove MAC filter rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper access control in the delMacFilterRules function of TOTOLINK T6 firmware 4.1.5cu.748_B20211015. An attacker without authentication can exploit this by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint, enabling them to remove MAC filter rules. The CVSS v3.1 score is 9.8, indicating critical severity with network attack vector, no privileges required, no user interaction, and full impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows unauthenticated attackers to remove MAC filter rules, potentially bypassing network access controls. This can lead to unauthorized network access and full compromise of device security, impacting confidentiality, integrity, and availability.
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 network access to the device's management interface and monitor for suspicious POST requests targeting /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: 6a95a6d2acd9273b494ef9a1
Added to database: 08/31/2026, 16:07:46 UTC
Last enriched: 09/07/2026, 14:55:20 UTC
Last updated: 10/13/2026, 18:48:21 UTC
Views: 77
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.