Incorrect access control in the getStaticDhcpRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain static… (CVE-2026-51629)
Description
An incorrect access control vulnerability exists in the getStaticDhcpRules function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to retrieve static DHCP reservation rules by sending a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint. The vulnerability has a medium severity rating with a CVSS score of 4.3.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-51629 is an access control vulnerability in the TOTOLINK T6 router firmware version 4.1.5cu.748_B20211015. The issue resides in the getStaticDhcpRules function, which improperly restricts access, enabling unauthenticated attackers to obtain static DHCP reservation rules via a specially crafted POST request to /cgi-bin/cstecgi.cgi. This vulnerability is classified under CWE-284 (Improper Access Control).
Potential Impact
An attacker without authentication can obtain static DHCP reservation rules from the affected device. This information disclosure could aid in network reconnaissance but does not allow modification or denial of service. The confidentiality impact is low, with no integrity or availability impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Until a patch is released, restrict access to the device management interface and monitor for suspicious POST requests targeting /cgi-bin/cstecgi.cgi.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-232c-j76f-6rhp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51629"]
Threat ID: 6a92f7f9acd9273b49e89b21
Added to database: 08/29/2026, 15:17:13 UTC
Last enriched: 09/09/2026, 19:23:59 UTC
Last updated: 10/11/2026, 18:48:20 UTC
Views: 24
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.