CVE-2026-5679

Totolink A3300R cstecgi.cgi vsetTr069Cfg os command injection

CVSS 5.1 MEDIUMEPSS 1.7%CWE-77 CWE-78

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.1EPSS 1.7%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

06 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

A security vulnerability has been detected in Totolink A3300R 17.0.0cu.557_B20221024. The impacted element is the function vsetTr069Cfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument stun_pass leads to os command injection. The exploit has been disclosed publicly and may be used.

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected products

Totolink · A3300R

public PoCs found — 1

cve_referencegithub.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injectionunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injection https://vuldb.com/submit/792650 https://vuldb.com/submit/792798 https://vuldb.com/vuln/355506 https://vuldb.com/vuln/355506/cti https://www.totolink.net/