CVE-2026-5102

moderate-risk
Published 2026-03-30

A security flaw has been discovered in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument qos_up_bw results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Do I need to act?

~
2.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Totolink

References (5)

Exploit https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md
Permissions Required https://vuldb.com/submit/779129
Third Party Advisory https://vuldb.com/vuln/354127
Third Party Advisory https://vuldb.com/vuln/354127/cti
Product https://www.totolink.net/
33
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 5/34 · Minimal
Exposure 5/34 · Minimal