CVE-2026-5339Tenda G103 Setting gpon.lua action_set_net_settings command injection
Updated under an hour ago ()
Does this affect you?
It affects Tenda G103. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 4.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
- Weakness (CWE)
- CWE-77, CWE-74
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Apr 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Tenda G103 tenda:g103_firmware | 1.0.0.5 | CNA record |
tenda g103_firmware tenda:g103_firmware | 1.0.0.5 | NVD |
References
- https://vuldb.com/vuln/354670vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/vuln/354670/ctisignature, permissions-required, vdb-entry
- https://vuldb.com/submit/781132third-party-advisory, vdb-entry
- https://vuldb.com/submit/781133third-party-advisory, vdb-entry
- https://vuldb.com/submit/781134third-party-advisory, vdb-entry
- https://vuldb.com/submit/781135third-party-advisory, vdb-entry
- https://vuldb.com/submit/781142third-party-advisory, vdb-entry
- https://vuldb.com/submit/781143third-party-advisory, vdb-entry
- https://vuldb.com/submit/781144third-party-advisory, vdb-entry
- https://vuldb.com/submit/781145third-party-advisory, vdb-entry
- https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoidexploit, third-party-advisory
- https://www.tenda.com.cn/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.