CVE-2026-5102

| EUVD-2026-17050 MEDIUM
2026-03-30 VulDB GHSA-h2wr-p8mq-wj29
5.3
CVSS 4.0
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CVSS Vector

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
PoC Detected
Mar 30, 2026 - 15:49 vuln.today
Public exploit code
Analysis Generated
Mar 30, 2026 - 00:15 vuln.today
EUVD ID Assigned
Mar 30, 2026 - 00:15 euvd
EUVD-2026-17050
CVE Published
Mar 30, 2026 - 00:00 nvd
MEDIUM 5.3

Tags

Command Injection

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.

Analysis

Command injection in Totolink A3300R 17.0.0cu.557_b20221024 allows authenticated remote attackers to execute arbitrary system commands via the qos_up_bw parameter in the setSmartQosCfg function of /cgi-bin/cstecgi.cgi. The vulnerability has a CVSS score of 6.3 (medium severity) with low attack complexity, and publicly available exploit code exists, though no active exploitation via CISA KEV has been confirmed at time of analysis.

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +2.9
CVSS: +26
POC: +20

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CVE-2026-5102 vulnerability details – vuln.today
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