CVE-2026-5339HIGH 4.7EPSS p92.2%

CVE-2026-5339CVE-2026-5339

tenda / g103_firmware

Description

A vulnerability was detected in Tenda G103 1.0.0.5. The impacted element is the function action_set_net_settings of the file gpon.lua of the component Setting Handler. Performing a manipulation of the argument authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Scoring

CVSS 3.14.7 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
EPSS5.70% probability of exploitation · percentile 92.2% · 2026-08-03T12:00:16Z
Published2026-04-02
Last modified2026-07-24

Underlying weaknesses· 2

CWE-74CWE-77

References

  1. https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid
  2. https://vuldb.com/submit/781132
  3. https://vuldb.com/submit/781133
  4. https://vuldb.com/submit/781134
  5. https://vuldb.com/submit/781135
  6. https://vuldb.com/submit/781142
  7. https://vuldb.com/submit/781143
  8. https://vuldb.com/submit/781144

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.