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CVE-2026-5020

Totolink A3600R Parameter cstecgi.cgi setNoticeCfg command injection

CVSS 5.3 MEDIUMEPSS 2.2%CWE-74CWE-77
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 2.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
29 Mar 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A vulnerability was detected in Totolink A3600R 4.1.2cu.5182_B20201102. Affected by this issue is the function setNoticeCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument NoticeUrl results in command injection. The attack may be launched remotely. The exploit is now public and may be used.
CVSS:4.0/AV:N/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 · A3600R
public PoCs found — 1
cve_referencelavender-bicycle-a5a.notion.site/TOTOLINK_A3600R_setNoticeCfg-32253a41781f80c197eaf8e7558c5ed1?source=copy_linkunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://lavender-bicycle-a5a.notion.site/TOTOLINK_A3600R_setNoticeCfg-32253a41781f80c197eaf8e7558c5ed1?source=copy_linkhttps://vuldb.com/submit/779536https://vuldb.com/vuln/353905https://vuldb.com/vuln/353905/ctihttps://www.totolink.net/