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PatchSiren cyber security CVE debrief

CVE-2026-8259 Tenda CVE debrief

A vulnerability has been found in Tenda AC6 2.0/15.03.06.23. The affected element is an unknown function of the file /goform/telnet of the component httpd. The manipulation of the argument lan.ip leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vulnerability is caused by improper handling of the lan.ip argument in the /goform/telnet function of the httpd component. This allows for os command injection, which can be exploited remotely. Users of Tenda AC6 2.0/15.03.06.23 should be aware of this vulnerability and take necessary precautions to prevent exploitation.

Vendor
Tenda
Product
AC6
CVSS
LOW 2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-11
Original CVE updated
2026-07-23
Advisory published
2026-05-11
Advisory updated
2026-07-23

Who should care

Users of Tenda AC6 2.0/15.03.06.23 should be aware of this vulnerability and take necessary precautions to prevent exploitation. This includes applying patches or updates provided by the vendor, restricting access to the /goform/telnet function, and monitoring for suspicious activity. Additionally, operators of Tenda AC6 2.0/15.03.06.23, platform administrators, and security teams should review the vulnerability and implement necessary mitigations.

Technical summary

The vulnerability is caused by improper handling of the lan.ip argument in the /goform/telnet function of the httpd component. This allows for os command injection, which can be exploited remotely. The vulnerability has been found in Tenda AC6 2.0/15.03.06.23. The affected element is an unknown function of the file /goform/telnet of the component httpd. The manipulation of the argument lan.ip leads to os command injection.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor
  • Restrict access to the /goform/telnet function
  • Monitor for suspicious activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-05-11T02:16:27.417Z and was last modified on 2026-07-23T20:10:00.130Z. The NVD entry is currently Analyzed. The vulnerability has been found in Tenda AC6 2.0/15.03.06.23. Evidence from the CVE record and NVD entry suggests that the vulnerability is caused by improper handling of the lan.ip argument in the /goform/telnet function of the httpd component. This allows for os command injection, which can be exploited remotely. However, detailed information about the vulnerability, such as the exact impact and potential attack vectors, is limited in the provided sources.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-05-11T02:16:27.417Z and has not been modified since then. The NVD entry is currently Analyzed.