CVE-2026-5020 — MEDIUM (6.3)

Vulnerability Description

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 Score

6.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Totolink	A3600R Firmware	4.1.2cu.5182_b20201102
Totolink	A3600R	-

Related Weaknesses (CWE)

CWE-74 CWE-77

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK_A3600R_setNoticeCfg-32253a4178ExploitThird Party Advisory
https://vuldb.com/submit/779536Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/353905Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/353905/ctiPermissions RequiredVDB Entry
https://www.totolink.net/Product

FAQ

What is CVE-2026-5020?

CVE-2026-5020 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 man...

How severe is CVE-2026-5020?

CVE-2026-5020 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-5020?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A3600R Firmware, Totolink A3600R.