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CVE-2025-20262: cisco cisco nx-os software NULL Pointer Dereference

CVSS: 5.0v3.1MediumDeferred
Published 27-08-2025Last modified 27-08-2025
Open JSON

Vulnerability summary

CVE-2025-20262 is a medium (CVSS 5.0) NULL Pointer Dereference vulnerability in cisco cisco nx-os software. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.2% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.35%
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. 27-08-2025
    PublishedVulnerability first disclosed.
  2. 27-08-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability in the Protocol Independent Multicast Version 6 (PIM6) feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, low-privileged, remote attacker to trigger a crash of the PIM6 process, resulting in a denial of service (DoS) condition. This vulnerability is due to improper processing of PIM6 ephemeral data queries. An attacker could exploit this vulnerability by sending a crafted ephemeral query to an affected device through one of the following methods: NX-API REST, NETCONF, RESTConf, gRPC, or Model Driven Telemetry. A successful exploit could allow the attacker to cause the PIM6 process to crash and restart, causing potential adjacency flaps and resulting in a DoS of the PIM6 and ephemeral query processes.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

0.00 pp

From 0.35% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.35%

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

Cisco1 product
  • cisco nx-os software9.2(3) | 9.2(2v) | 9.2(1) | 9.2(2t) | 9.2(3y) | 9.3(2) | 9.2(4) | 9.3(1) | 9.3(1z) | 9.2(2) | 9.3(3) | 9.3(4) | 9.3(5) | 9.3(6) | 10.1(2) | 10.1(1) | 9.3(5w) | 9.3(7) | 9.3(7k) | 10.2(1) | 9.3(7a) | 9.3(8) | 10.2(1q) | 10.2(2) | 9.3(9) | 10.1(2t) | 10.2(3) | 10.2(3t) | 9.3(10) | 10.2(2a) | 10.3(1) | 10.2(4) | 10.3(2) | 9.3(11) | 10.3(3) | 10.2(5) | 9.3(12) | 10.2(3v) | 10.4(1) | 10.3(99w) | 10.2(6) | 10.3(3w) | 10.3(99x) | 10.3(3o) | 10.3(4) | 10.3(3p) | 10.3(4a) | 10.4(2) | 10.3(3q) | 9.3(13) | 10.3(5) | 10.2(7) | 10.4(3) | 10.3(3x) | 10.3(4g) | 10.5(1) | 10.2(8) | 10.3(3r) | 10.3(6) | 9.3(14) | 10.4(4) | 10.3(4h) | 10.5(2) | 10.4(4g)

1 vendor · 1 product

References

1 links