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TI-2026-13256 Aliases CVE-2026-15757GHSA-xc2c-56pv-q355

Insufficient input validation vulnerability in NETGEAR DGND3700v1 modem router

Priority LOW 30CWE-20Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A security flaw was discovered in the NETGEAR DGND3700v1 that could allow someone on the same local WiFi network to send unauthorized commands to the device. This issue was identified through testing in a controlled research environment using a simulated version of the router's software and has not been confirmed on physical production devices.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00251 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NETGEARDGND3700v1up to V1.0.0.17—No fix listedCNA
  • DGND3700v1 VendorNETGEAR Affected up to V1.0.0.17 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15757
  2. 2026-10-03 Alias added: GHSA-xc2c-56pv-q355

References

Patch 1

Advisory 1

  • TI-2020-16346 NETGEAR JGS516PE devices before 2.6.0.43 are affected by lack of access control at the function level. KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-04600 Buffer overflow in NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03982 ping.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-08250 The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-01416 (1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-04162 dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote… KEVCVSS 3.1HIGH 8.8
See all 1364 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences