Medium severity6.3NVD Advisory· Published Mar 29, 2026· Updated Apr 29, 2026

CVE-2026-5020

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.

Affected products

Totolink/A3600r Firmware
cpe:2.3:o:totolink:a3600r_firmware:4.1.2cu.5182_b20201102:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

lavender-bicycle-a5a.notion.site/TOTOLINK_A3600R_setNoticeCfg-32253a41781f80c197eaf8e7558c5ed1nvdExploitThird Party Advisory
vuldb.com/submit/779536nvdThird Party AdvisoryVDB Entry
vuldb.com/vuln/353905nvdThird Party AdvisoryVDB Entry
vuldb.com/vuln/353905/ctinvdPermissions RequiredVDB Entry
www.totolink.netnvdProduct

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

6.3/ 10

CVSS v42.1

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack vector: Network
Complexity: Low
Privileges: Low
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Vector

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

EPSS

Probability of exploitation in the next 30 days.

1.92%

VYPR risk score

Composite of severity, exploitation, and reach.

0.41medium

cvss	0.410
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE ID

CVE-2026-5020

Credits

W(
wxhwxhwxh_mie (VulDB User)
reporter