CVE-2026-51671: n/a
Description
CVE-2026-51671 is a high-severity vulnerability in TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It involves incorrect access control in the getCloudDownloadStatus function, allowing unauthenticated attackers to retrieve cloud firmware download state information by sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-51671 affects TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. Due to improper access control in the getCloudDownloadStatus function, an unauthenticated attacker can send a specially crafted POST request to the endpoint /cgi-bin/cstecgi.cgi and obtain information about the cloud firmware download status. This flaw does not require authentication and impacts confidentiality but does not affect integrity or availability. The CVSS v3.1 score is 7.5 (high), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and high confidentiality impact.
Potential Impact
An unauthenticated attacker can obtain sensitive information about the cloud firmware download state from the affected device. This exposure of confidential information could potentially aid further attacks or reconnaissance. There is no impact on integrity or availability reported. No known exploits in the wild have been documented.
Mitigation Recommendations
No patch or official fix is currently documented for this vulnerability. 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 endpoint if possible and monitor for unusual POST requests targeting /cgi-bin/cstecgi.cgi.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q8w3-gqh4-7j5h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51671"]
Threat ID: 6a95bf00acd9273b49667713
Added to database: 08/31/2026, 17:50:56 UTC
Last enriched: 09/07/2026, 23:07:15 UTC
Last updated: 10/16/2026, 18:48:21 UTC
Views: 70
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