Description
A vulnerability in the PROFINET handler for Link Layer Discovery Protocol (LLDP) messages of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a crash on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of LLDP messages in the PROFINET LLDP message handler. An attacker could exploit this vulnerability by sending a malicious LLDP message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.
Published: 2020-09-24
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-24783 A vulnerability in the PROFINET handler for Link Layer Discovery Protocol (LLDP) messages of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a crash on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of LLDP messages in the PROFINET LLDP message handler. An attacker could exploit this vulnerability by sending a malicious LLDP message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.
History

Wed, 25 Feb 2026 07:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco Catalyst 3650-12x48uq Catalyst 3650-12x48ur Catalyst 3650-12x48uz Catalyst 3650-24pd Catalyst 3650-24pdm Catalyst 3650-48fqm Catalyst 3650-8x24uq Catalyst 3850-24xs Catalyst 3850-48xs Catalyst 3850-nm-2-40g Catalyst 3850-nm-8-10g Catalyst C9200-24p Catalyst C9200-24t Catalyst C9200-48p Catalyst C9200-48t Catalyst C9200l-24p-4g Catalyst C9200l-24p-4x Catalyst C9200l-24pxg-2y Catalyst C9200l-24pxg-4x Catalyst C9200l-24t-4g Catalyst C9200l-24t-4x Catalyst C9200l-48p-4g Catalyst C9200l-48p-4x Catalyst C9200l-48pxg-2y Catalyst C9200l-48pxg-4x Catalyst C9200l-48t-4g Catalyst C9200l-48t-4x Catalyst C9300-24p Catalyst C9300-24s Catalyst C9300-24t Catalyst C9300-24u Catalyst C9300-24ux Catalyst C9300-48p Catalyst C9300-48s Catalyst C9300-48t Catalyst C9300-48u Catalyst C9300-48un Catalyst C9300-48uxm Catalyst C9300l-24p-4g Catalyst C9300l-24p-4x Catalyst C9300l-24t-4g Catalyst C9300l-24t-4x Catalyst C9300l-48p-4g Catalyst C9300l-48p-4x Catalyst C9300l-48t-4g Catalyst C9300l-48t-4x Catalyst C9404r Catalyst C9407r Catalyst C9410r Catalyst C9500-12q Catalyst C9500-16x Catalyst C9500-24q Catalyst C9500-24y4c Catalyst C9500-32c Catalyst C9500-32qc Catalyst C9500-40x Catalyst C9500-48y4c Connected Grid Switch 2520 Ess 2020 Ess 3300 Ie-1000 Ie-2000u-16tc-g Ie-2000u-16tc-g-x Ie-2000u-16tc-gp Ie-2000u-4s-g Ie-2000u-4t-gs Ie-2000u-4ts-g Ie-2000u-8tc-g Ie-3000 Ie-3010-16s-8pc Industrial Ethernet Switch Ie-3010-24tc Industrial Ethernet Switch Ie-3200-8p2s-e Ie-3200-8t2s-e Ie-3300-8p2s-a Ie-3300-8p2s-e Ie-3300-8t2s-a Ie-3300-8t2s-e Ie-3300-8t2x-a Ie-3300-8t2x-e Ie-3300-8u2x-a Ie-3300-8u2x-e Ie-3400-8p2s-a Ie-3400-8p2s-e Ie-3400-8t2s-a Ie-3400-8t2s-e Ie-4000-16gt4g-e Ie-4000-16t4g-e Ie-4000-4gc4gp4g-e Ie-4000-4gs8gp4g-e Ie-4000-4s8p4g-e Ie-4000-4t4p4g-e Ie-4000-4tc4g-e Ie-4000-8gs4g-e Ie-4000-8gt4g-e Ie-4000-8gt8gp4g-e Ie-4000-8s4g-e Ie-4000-8t4g-e Ie-4010-16s12p Industrial Ethernet Switch Ie-4010-4s24p Industrial Ethernet Switch Ie-5000-12s12p-10g Ie-5000-16s12p Ie 2000-16ptc-g Industrial Ethernet Switch Ie 2000-16t67 Industrial Ethernet Switch Ie 2000-16t67p Industrial Ethernet Switch Ie 2000-16tc-g-e Industrial Ethernet Switch Ie 2000-16tc-g-n Industrial Ethernet Switch Ie 2000-16tc-g-x Industrial Ethernet Switch Ie 2000-16tc-g Industrial Ethernet Switch Ie 2000-16tc Industrial Ethernet Switch Ie 2000-24t67 Industrial Ethernet Switch Ie 2000-4s-ts-g Industrial Ethernet Switch Ie 2000-4t-g Industrial Ethernet Switch Ie 2000-4t Industrial Ethernet Switch Ie 2000-4ts-g Industrial Ethernet Switch Ie 2000-4ts Industrial Ethernet Switch Ie 2000-8t67 Industrial Ethernet Switch Ie 2000-8t67p Industrial Ethernet Switch Ie 2000-8tc-g-e Industrial Ethernet Switch Ie 2000-8tc-g-n Industrial Ethernet Switch Ie 2000-8tc-g Industrial Ethernet Switch Iem-3300-14t2s Iem-3300-16p Iem-3300-16t Iem-3300-4mu-2 Iem-3300-6t2s Iem-3300-8p Iem-3300-8s Iem-3300-8t Iem-3400-8p Iem-3400-8s Iem-3400-8t Ios Xe
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-13T18:00:50.458Z

Reserved: 2019-12-12T00:00:00.000Z

Link: CVE-2020-3512

cve-icon Vulnrichment

Updated: 2024-08-04T07:37:54.412Z

cve-icon NVD

Status : Modified

Published: 2020-09-24T18:15:21.323

Modified: 2024-11-21T05:31:13.510

Link: CVE-2020-3512

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses