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01 Record

CVE-2026-20010

Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service Vulnerability

HighPUBLISHEDCNA: cisco
CNA base score7.4 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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02 Description

Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.18% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 7.7% of scored records. A rank, not a probability.
NVD base score
7.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-02-25 16:18Z8 MO AGO
Last updated
2026-02-25 19:05Z8 MO AGO
Reserved
2025-10-08
Assigning CNA
cisco
Record state
PUBLISHED
Severity
High (CVSS 7.4)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weaknesses
  • CWE-805Buffer Access with Incorrect Length ValueBase
Data version
5.2
Document digest
9c5c230bdea9264ac0e7a5a6f34baa72a65b7afa12cb8c602b9629e40db8b3fb

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco NX-OS Software10.3(1), 10.3(2), 10.3(3), 10.4(1), 10.3(99w), 10.3(3w), 10.3(99x), 10.3(3o), 10.3(4), 10.3(3p), 10.3(4a), 10.4(2), 10.3(3q), 10.3(3x), 10.3(4g), 10.3(3r), 10.3(4h)—
CiscoCisco NX-OS System Software in ACI Mode16.0(2h), 16.0(2j), 16.0(3d), 16.0(3e), 16.0(4c), 16.0(5h), 16.0(3g), 16.0(5j), 16.0(6c), 16.1(1f), 16.0(7e), 16.0(8e), 16.0(8f), 16.1(2f), 16.1(2g), 16.0(9c), 16.1(3f), 16.0(9d), 16.0(6h), 16.0(8h), 16.1(3g)—
CiscoCisco Unified Computing System (Managed)4.3(4e), 4.3(6b), 4.3(4c), 4.3(4f), 4.3(6d), 4.3(5e), 4.3(4d), 4.3(4b), 4.3(5a), 4.3(5c), 4.3(5d), 4.3(6c), 4.3(6a)—

06 References