TI-2020-12310 Aliases CVE-2020-15635 GHSA-mw3v-c98c-6mmw

Stack-based buffer overflow in NETGEAR R6700

MEDIUM 43CWE-121Published 2020-08-19 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the acsd service, which listens on TCP port 5916 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-9853.

Why it matters now

EPSS 0.02644 85th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NETGEAR	R6700	1.0.4.84_10.0.58	—	No fix listed	CNA

R6700 VendorNETGEAR Affected 1.0.4.84_10.0.58 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:netgear:r6700_firmware::::::::	before 1.0.4.98	Vulnerable	NETGEAR
cpe:2.3:h:netgear:r6700:v3:::::::*	v3	Running on	NETGEAR

cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:* Versions before 1.0.4.98 Vulnerable ·NETGEAR
cpe:2.3:h:netgear:r6700:v3:*:*:*:*:*:*:* Versions v3 Running on ·NETGEAR

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-15635
2026-10-03 Alias added: GHSA-mw3v-c98c-6mmw

References

Advisory 2

TI-2016-05377 NETGEAR R6250 before 1.0.4.6.Beta, R6400 before 1.0.1.18.Beta, R6700 before… KEVCVSS 3.1HIGH 8.8
TI-2020-08805 Stack-based buffer overflow in NETGEAR R6700 CVSS 3.1HIGH 8.8
TI-2020-08804 Authentication bypass in NETGEAR R6700 CVSS 3.1HIGH 8.8
TI-2023-16567 Netgear D6220 with Firmware Version 1.0.0.80, D8500 with Firmware Version 1.0.3.60, R6700… CVSS 3.1HIGH 8.8
TI-2022-10624 Buffer overflow in NETGEAR R6700v3 CVSS 3.1HIGH 8.8
TI-2020-12311 Stack-based buffer overflow in NETGEAR Multiple Routers CVSS 3.1CRITICAL 9.8

See all 172 →

Sources

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