Vulnerability · Published Oct 12, 2026 · Assigned by VulDB

CVE-2026-108893Linksys E1700 setVlan stack-based overflow

Critical 9.9

In plain English

A critical-severity stack buffer overflow in E1700 from Linksys. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.5%top 54.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in Linksys E1700 up to 1.0.0.4.003. This issue affects the function setVlan of the file /goform/setVlan. Such manipulation of the argument vlan_set leads to stack-based buffer overflow. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Linksys	E1700	1.0.0.4.003

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-416685 | Linksys E1700 setVlan stack-based overflow vdb-entry, technical-description
VDB-416685 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-108893 | CVE Analysis and Report third-party-advisory
Submit #973112 | Linksys E1700 1.0.0.4.003 Stack-based Buffer Overflow third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_67/67.md exploit
https://www.linksys.com/ product