TI-2026-70977 Aliases CVE-2026-108892 GHSA-cgfm-fxm5-56x9

Stack-based buffer overflow in Linksys E1700 Mac Filter

HIGH 82CWE-119Published 2026-10-12 · Updated 2026-10-15

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Linksys E1700 from 1.0.0.4.003 is affected. Manipulating the newap_text_%d argument handled by the ssid1MACFilter function causes a stack-based buffer overflow (CWE-121). A remote attacker can trigger it without authentication, and an exploit has been publicly disclosed. The vendor did not respond to early contact about the disclosure.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. This manipulation of the argument newap_text_%d causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00619 49th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linksys	E1700	1.0.0.4.003	—	No fix listed	CNA

E1700 VendorLinksys Affected 1.0.0.4.003 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:linksys:e1700_firmware::::::::	—	—	Linksys

cpe:2.3:o:linksys:e1700_firmware:*:*:*:*:*:*:*:* Versions — — ·Linksys

Remediation

The sources list no fixed version for Linksys E1700.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-12 Threatist record created from CVE-2026-108892
2026-10-12 Alias added: GHSA-cgfm-fxm5-56x9
2026-10-16 CISA SSVC decision points changed
2026-10-16 Priority changed: MEDIUM → HIGH

References

Exploit 1

https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_66/66.md

Other 1

https://www.linksys.com/

TI-2025-24206 Linksys Routers E/WAG/WAP/WES/WET/WRT-Series CVSS 4.0CRITICAL 10.0
TI-2017-12715 OS command injection in Linksys WVBR0 CVSS 3.0CRITICAL 9.8
TI-2026-22199 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22198 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22197 Missing authentication in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2025-28791 Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in… CVSS 3.1CRITICAL 9.8

See all 253 →

Sources

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