7.4

CVE-2026-20010: cisco cisco nx-os software

CVSS: 7.4v3.1HighDeferred
Published 25-02-2026Last modified 25-02-2026
Open JSON

Vulnerability summary

CVE-2026-20010 is a high (CVSS 7.4) vulnerability in cisco cisco nx-os software. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 25-02-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP process to restart, which could cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol).

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

0.00 pp

From 0.17% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco3 products
  • cisco 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)
  • cisco 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)
  • cisco 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)

1 vendor · 3 products

References

1 links