VulnerabilityAnalyzed

CVE-2026-5102

This vulnerability affects the function setSmartQosCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler.

LOW 2.1EPSS 2.38%

Does this matter?

Lower severity and a low EPSS score (2.38%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 4.0: 2.1 LOWCVSS: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/M
EPSS: 2.38% probability · 83th percentile
CISA KEV: Not listed
Weakness: CWE-74, CWE-77
Affected: totolink/a3300r firmware
Source: cna@vuldb.com

References

https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.mdExploit, Third Party Advisory
https://vuldb.com/submit/779129Permissions Required, VDB Entry
https://vuldb.com/vuln/354127Third Party Advisory, VDB Entry
https://vuldb.com/vuln/354127/ctiThird Party Advisory, VDB Entry
https://www.totolink.net/Product

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.