EIP-2026-100999

PRE-CVE

Cisco - VLAN Trunking Protocol Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-100999. PoCs published by showrun.

AI-analyzed exploit summary This exploit targets a Cisco VLAN Trunking Protocol (VTP) vulnerability to cause a denial-of-service (DoS) by sending maliciously crafted VTP packets. It requires the target switch to be in Server/Client mode and the attacker's port to be in trunk mode.

Description

Cisco - VLAN Trunking Protocol Denial of Service

Exploits (1)

exploitdb WORKING POC VERIFIED
by showrun · cdoshardware
https://www.exploit-db.com/exploits/7776

This exploit targets a Cisco VLAN Trunking Protocol (VTP) vulnerability to cause a denial-of-service (DoS) by sending maliciously crafted VTP packets. It requires the target switch to be in Server/Client mode and the attacker's port to be in trunk mode.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Cisco VTP (specific versions not specified)
No auth needed
Prerequisites: Switch in Server/Client mode · Attacker's port in trunk mode · Knowledge of VTP domain
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026