CVE-2026-51676

9.1 CRITICAL 0.5% exploit odds No fix listed Auth & access

What it is

Incorrect access control in the setAccessDeviceCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter access-device policies via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-08-31 14:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-01 13:19 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-31 14:17 UTC
Last modified: 2026-09-01 13:19 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-284 · Improper access control
Record status: Deferred

Attack profile CVSS 3.1 · 9.1

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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References

NVD record · CVE.org record