CVE-2020-3120

🗓️ 05 Feb 2020 17:50:18Reported by ciscoType

A vulnerability in the Cisco Discovery Protocol could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS)

Reporter	Title	Published	Views	Family All 23
Tenable Nessus	Cisco IOS XR Software Cisco Discovery Protocol DoS (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)	18 Feb 202000:00	–	nessus
Tenable Nessus	Cisco FXOS Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)	14 Feb 202000:00	–	nessus
Tenable Nessus	Cisco IOS XR Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)	14 Feb 202000:00	–	nessus
Tenable Nessus	Cisco NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability (cisco-sa-20200205-fxnxos-iosxr-cdp-dos)	14 Feb 202000:00	–	nessus
Tenable Nessus	Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service (CVE-2020-3120)	25 Jul 202300:00	–	nessus
ATTACKERKB	CVE-2020-3120 (AKA: CDPwn)	5 Feb 202000:00	–	attackerkb
BDU FSTEC	The vulnerability in the implementation of the Cisco Discovery protocol in Cisco NX-OS, Cisco FXOS, and Cisco IOS XR operating systems allows a perpetrator to trigger a service failure.	9 Mar 202000:00	–	bdu_fstec
Circl	CVE-2020-3120	7 Feb 202011:05	–	circl
Cisco	Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability	5 Feb 202016:00	–	cisco
CNVD	Cisco Discovery Protocol Denial of Service Vulnerability in Cisco FXOS, IOS XR and NX-OS Software	6 Feb 202000:00	–	cnvd

NVD

Vulners

Node

AND

cisco firepower_extensible_operating_systemRange≤2.3.1.173

cisco firepower_extensible_operating_systemRange2.6–2.6.1.187

cisco firepower_extensible_operating_systemRange2.7–2.7.1.106

cisco fxosMatch2.4

cisco firepower_4110Match-

cisco firepower_4115Match-

cisco firepower_4120Match-

cisco firepower_4125Match-

cisco firepower_4140Match-

cisco firepower_4145Match-

cisco firepower_4150Match-

cisco firepower_9300Match-

Node

AND

cisco ios_xrMatch5.2.5

cisco ncs_6000Match-

Node

AND

cisco ios_xrMatch6.4.2

cisco asr_9000vMatch-

cisco asr_9001Match-

cisco asr_9006Match-

cisco asr_9010Match-

cisco asr_9901Match-

cisco asr_9904Match-

cisco asr_9906Match-

cisco asr_9910Match-

cisco asr_9912Match-

cisco asr_9922Match-

cisco crsMatch-

Node

AND

cisco ios_xrMatch6.5.3

cisco asr_9000vMatch-

cisco asr_9001Match-

cisco asr_9006Match-

cisco asr_9010Match-

cisco asr_9901Match-

cisco asr_9904Match-

cisco asr_9906Match-

cisco asr_9910Match-

cisco asr_9912Match-

cisco asr_9922Match-

cisco ncs_5001Match-

cisco ncs_5002Match-

cisco ncs_5011Match-

cisco ncs_540-12z20g-sys-aMatch-

cisco ncs_540-12z20g-sys-dMatch-

cisco ncs_540-24z8q2c-sysMatch-

cisco ncs_540-28z4c-sys-aMatch-

cisco ncs_540-28z4c-sys-dMatch-

cisco ncs_540-acc-sysMatch-

cisco ncs_540x-12z16g-sys-aMatch-

cisco ncs_540x-12z16g-sys-dMatch-

cisco ncs_540x-16z4g8q2c-aMatch-

cisco ncs_540x-16z4g8q2c-dMatch-

cisco ncs_540x-acc-sysMatch-

cisco ncs_5501Match-

cisco ncs_5501-seMatch-

cisco ncs_5502Match-

cisco ncs_5502-seMatch-

cisco ncs_5508Match-

cisco ncs_5516Match-

cisco ncs_560Match-

cisco xrv_9000Match-

Node

AND

cisco ios_xrMatch6.6.25

cisco ncs_560Match-

Node

AND

cisco ios_xrMatch7.0.1

cisco ncs_540lMatch-

Node

AND

cisco nx-osRange5.2–6.2(29)

cisco nx-osRange7.3–8.4(1a)

cisco mds_9132tMatch-

cisco mds_9148sMatch-

cisco mds_9148tMatch-

cisco mds_9216Match-

cisco mds_9216aMatch-

cisco mds_9216iMatch-

cisco mds_9222iMatch-

cisco mds_9506Match-

cisco mds_9509Match-

cisco mds_9513Match-

cisco mds_9706Match-

cisco mds_9710Match-

cisco mds_9718Match-

Node

AND

cisco nx-osRange5.2–5.2(1)sv5(1.3)

cisco nexus_1000veMatch-vsphere

Node

AND

cisco nx-osRange≤5.2

cisco nexus_1000vMatch-hyper-v

Node

AND

cisco nx-osRange<5.2(1)sv3(4.1b)

cisco nexus_1000vMatch-vsphere

Node

AND

cisco nx-osRange7.0(3)f2–9.3(2)

cisco nx-osRange7.0(3)i–7.0(3)i7(8)

cisco nexus_3016Match-

cisco nexus_3048Match-

cisco nexus_3064Match-

cisco nexus_3064-tMatch-

cisco nexus_31108pc-vMatch-

cisco nexus_31108tc-vMatch-

cisco nexus_31128pqMatch-

cisco nexus_3132c-zMatch-

cisco nexus_3132qMatch-

cisco nexus_3132q-vMatch-

cisco nexus_3132q-xlMatch-

cisco nexus_3164qMatch-

cisco nexus_3172Match-

cisco nexus_3172pq-xlMatch-

cisco nexus_3172tqMatch-

cisco nexus_3172tq-32tMatch-

cisco nexus_3172tq-xlMatch-

cisco nexus_3232c_Match-

cisco nexus_3264c-eMatch-

cisco nexus_3264qMatch-

cisco nexus_3408-sMatch-

cisco nexus_34180ycMatch-

cisco nexus_3432d-sMatch-

cisco nexus_3464cMatch-

cisco nexus_3524Match-

cisco nexus_3524-xMatch-

cisco nexus_3524-xlMatch-

cisco nexus_3548Match-

cisco nexus_3548-xMatch-

cisco nexus_3548-xlMatch-

cisco nexus_36180yc-rMatch-

cisco nexus_3636c-rMatch-

cisco nexus_9000vMatch-

cisco nexus_92160yc-xMatch-

cisco nexus_92300ycMatch-

cisco nexus_92304qcMatch-

cisco nexus_92348gc-xMatch-

cisco nexus_9236cMatch-

cisco nexus_9272qMatch-

cisco nexus_93108tc-exMatch-

cisco nexus_93108tc-fxMatch-

cisco nexus_93120txMatch-

cisco nexus_93128txMatch-

cisco nexus_93180lc-exMatch-

cisco nexus_93180yc-exMatch-

cisco nexus_93180yc-fxMatch-

cisco nexus_93216tc-fx2Match-

cisco nexus_93240yc-fx2Match-

cisco nexus_9332cMatch-

cisco nexus_9332pqMatch-

cisco nexus_93360yc-fx2Match-

cisco nexus_9336c-fx2Match-

cisco nexus_9336pq_aci_spineMatch-

cisco nexus_9348gc-fxpMatch-

cisco nexus_9364cMatch-

cisco nexus_9372pxMatch-

cisco nexus_9372px-eMatch-

cisco nexus_9372txMatch-

cisco nexus_9372tx-eMatch-

cisco nexus_9396pxMatch-

cisco nexus_9396txMatch-

cisco nexus_9504Match-

cisco nexus_9508Match-

cisco nexus_9516Match-

Node

AND

cisco nx-osRange<7.3(6)n1(1)

cisco nexus_5548pMatch-

cisco nexus_5548upMatch-

cisco nexus_5596tMatch-

cisco nexus_5596upMatch-

cisco nexus_56128pMatch-

cisco nexus_5624qMatch-

cisco nexus_5648qMatch-

cisco nexus_5672upMatch-

cisco nexus_5696qMatch-

Node

AND

cisco nx-osRange<6.2(24)

cisco nx-osRange7.2–7.3(5)d1(1)

cisco nx-osRange8.0–8.2(5)

cisco nx-osRange8.3–8.4(2)

cisco nexus_7000Match-

cisco nexus_7700Match-

Node

AND

cisco nx-osRange<13.2(9b)

cisco nx-osRange14.0–14.2(1j)

cisco nexus_9000vMatch-

cisco nexus_92160yc-xMatch-

cisco nexus_92300ycMatch-

cisco nexus_92304qcMatch-

cisco nexus_92348gc-xMatch-

cisco nexus_9236cMatch-

cisco nexus_9272qMatch-

cisco nexus_93108tc-exMatch-

cisco nexus_93108tc-fxMatch-

cisco nexus_93120txMatch-

cisco nexus_93128txMatch-

cisco nexus_93180lc-exMatch-

cisco nexus_93180yc-exMatch-

cisco nexus_93180yc-fxMatch-

cisco nexus_93216tc-fx2Match-

cisco nexus_93240yc-fx2Match-

cisco nexus_9332cMatch-

cisco nexus_9332pqMatch-

cisco nexus_93360yc-fx2Match-

cisco nexus_9336c-fx2Match-

cisco nexus_9336pq_aci_spineMatch-

cisco nexus_9348gc-fxpMatch-

cisco nexus_9364cMatch-

cisco nexus_9372pxMatch-

cisco nexus_9372px-eMatch-

cisco nexus_9372txMatch-

cisco nexus_9372tx-eMatch-

cisco nexus_9396pxMatch-

cisco nexus_9396txMatch-

cisco nexus_9504Match-

cisco nexus_9508Match-

cisco nexus_9516Match-

Node

AND

cisco ucs_managerRange<3.2(3m)

cisco ucs_managerRange4.0–4.0(4g)

cisco ucs_6248upMatch-

cisco ucs_6296upMatch-

cisco ucs_6300Match-

cisco ucs_6324Match-

cisco ucs_64108Match-

cisco ucs_6454Match-

[
  {
    "product": "Cisco IOS XR Software",
    "vendor": "Cisco",
    "versions": [
      {
        "lessThan": "2.3.1.173",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

Source	Link
tools	www.tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos
packetstormsecurity	www.packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html

17 Jun 2026 03:17Current

6.5Medium risk

Vulners AI Score6.5

CVSS 26.1

CVSS 3.16.5

CVSS 37.4

EPSS0.02026

SSVC

CWE-190