CVE-2026-5020

Name: CVE-2026-5020
Creator: NVD / NIST
Published: 2026-03-29T01:15:57.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.1/10EPSS 2.23%

Last modified Jun 17, 2026

CVE-2026-5020 is a low-severity vulnerability rated 2.1/10 on the CVSS scale. 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. EPSS estimates a 2.23% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

2.1/10

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

EPSS Probability

2.23%

80.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A3600r Firmware	4.1.2cu.5182_b20201102

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK_A3600R_setNoticeCfg-32253a41781f80c197eaf8e7558c5ed1?source=copy_linkExploit, Third Party Advisory
https://vuldb.com/submit/779536Third Party Advisory, VDB Entry
https://vuldb.com/vuln/353905Third Party Advisory, VDB Entry
https://vuldb.com/vuln/353905/ctiPermissions Required, VDB Entry
https://www.totolink.net/Product

Timeline

Published: Mar 29, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5020?

How severe is CVE-2026-5020?

CVE-2026-5020 has a CVSS score of 2.1/10 (LOW severity). The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5020?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5020?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST