CVE-2019-1758

MEDIUM

Cisco IOS - Unauthenticated Network Access via 802.1x Packet Handling

Title source: llm
STIX 2.1

Description

A vulnerability in 802.1x function of Cisco IOS Software on the Catalyst 6500 Series Switches could allow an unauthenticated, adjacent attacker to access the network prior to authentication. The vulnerability is due to how the 802.1x packets are handled in the process path. An attacker could exploit this vulnerability by attempting to connect to the network on an 802.1x configured port. A successful exploit could allow the attacker to intermittently obtain access to the network.

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/107616

Scores

CVSS v3 4.7
EPSS 0.0059
EPSS Percentile 43.9%
Attack Vector ADJACENT_NETWORK
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-287
Status published
Products (50)
cisco/ios 12.2\(33\)sxj6
cisco/ios 12.2\(33\)sxj7
cisco/ios 12.2\(33\)sxj8
cisco/ios 12.2\(33\)sxj9
cisco/ios 12.2\(33\)sxj10
cisco/ios 12.2\(60\)ez12
cisco/ios 15.1\(1\)sy1
cisco/ios 15.1\(1\)sy2
cisco/ios 15.1\(1\)sy3
cisco/ios 15.1\(1\)sy4
... and 40 more
Published Mar 28, 2019
Tracked Since Feb 18, 2026