CVE-2026-5102HIGH 8.8EPSS p79.9%

CVE-2026-5102CVE-2026-5102

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS2.16% probability of exploitation · percentile 79.9% · 2026-06-19T12:03:05Z
Published2026-03-30
Last modified2026-04-29

Underlying weaknesses· 2

CWE-74CWE-77

References

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

2

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')cwe-740%live
WeaknessImproper Neutralization of Special Elements used in a Command ('Command Injection')cwe-770%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.