CVE-2026-5102

MEDIUM 6.3

Totolink A3300R Parameter cstecgi.cgi setSmartQosCfg command injection

CVSS Score

6.3

EPSS Score

2.9%

EPSS Percentile

86th

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.

CWE	CWE-77 CWE-74
Vendor	totolink
Product	a3300r
Published	Mar 30, 2026
Last Updated	Mar 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / A3300R

17.0.0cu.557_b20221024

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 LtzHuster2 (VulDB User)