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CVE-2026-7204 Totolink CVE debrief

A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setPptpServerCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable causes os command injection. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Users should assess the vulnerability and apply patches or mitigations as available.

Vendor
Totolink
Product
A8000RU
CVSS
HIGH 8.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-28
Original CVE updated
2026-07-24
Advisory published
2026-04-28
Advisory updated
2026-07-24

Who should care

Users of Totolink A8000RU 7.1cu.643_b20200521 should assess the vulnerability and apply patches or mitigations as available. This includes operators, platform administrators, vulnerability management teams, and security teams who need to evaluate the risk and implement necessary controls.

Technical summary

The vulnerability exists in the setPptpServerCfg function of /cgi-bin/cstecgi.cgi in Totolink A8000RU 7.1cu.643_b20200521. An attacker can inject OS commands by manipulating the enable argument. The vulnerability can be exploited remotely, and its exploitation has been publicly disclosed. Users of affected products should assess the vulnerability and apply patches or mitigations as available. This includes operators, platform administrators, vulnerability management teams, and security teams who need to evaluate the risk and implement necessary controls. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Further verification is recommended to confirm affected product deployments and ensure proper remediation.

Defensive priority

High priority due to remote exploitability and potential for command injection.

Recommended defensive actions

  • Apply patches or updates provided by the vendor as soon as available.
  • Implement network access controls to limit interaction with the vulnerable component.
  • Monitor system logs for suspicious activity related to the vulnerable component.
  • Consider using a web application firewall to detect and prevent attacks.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • 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 2026-04-28T01:16:01.780Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Deferred. The vulnerability affects Totolink A8000RU 7.1cu.643_b20200521, specifically the setPptpServerCfg function of /cgi-bin/cstecgi.cgi. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-28T01:16:01.780Z and has not been modified since then. The NVD entry is currently Deferred.