CVE-2026-5102

2.1 lowEPSS 2.4%

Low (2.1) in totolink a3300r firmware. EPSS 2.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

2.1 low

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

CVSS 3.1

8.8 high

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

EPSS: 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWEs: CWE-74, CWE-77
Published: 2026-03-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

totolink:a3300r_firmware

References

https://github.com/Litengzheng/vul_db/blob/main/A3300R/vul_40/README.md
https://vuldb.com/submit/779129
https://vuldb.com/vuln/354127
https://vuldb.com/vuln/354127/cti
https://www.totolink.net/

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