CVE-2025-20262

mediumpriority · track · 0EPSS 0.004 · 29 %ileDEEUNLRUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.35% (29th) EPSS
CVSS 5 · medium
Is it mine?
195 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

5.0
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15mediumAV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · ENISA EU
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · psirt@cisco.com USexploitability 3.1 · impact 1.4
v3.14.6mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · NCSC-NL NL
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USCWE-476USCWE-476US
05

affected products (195)

Products and version ranges known to be affected.

showing 20 of 195
06

advisories (4)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0270Kwetsbaarheden verholpen in Cisco NX-OS SoftwareNL2025-08-28csaf · ncsc_nlNL

    Cisco heeft kwetsbaarheden verholpen in Cisco NX-OS Software (Specifiek voor Nexus 3000 en 9000 Series Switches).

  • NCSC-2025-0287Kwetsbaarheden verholpen in Cisco NX-OS SoftwareNL2025-09-11csaf · ncsc_nlNL

    Cisco heeft kwetsbaarheden verholpen in Cisco NX-OS Software voor Nexus 3000 en 9000 Series Switches.

  • WID-SEC-W-2025-1915Cisco Nexus, Dashboard, NX-OS: Mehrere SchwachstellenDeutsch2025-08-27csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Cisco Nexus, Cisco NX-OS, Cisco Unified Computing System (UCS) und Cisco Nexus Dashboard ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, Root-Rechte zu erlangen, vertrauliche Informationen offenzulegen und Daten zu manipulieren.

  • cisco-sa-nxospc-pim6-vG4jFPhCisco Nexus 3000 and 9000 Series Switches Protocol Independent Multicast Version 6 Denial of Service Vulnerability2025-08-27csaf · cisco_csafUS

    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. For an example of an ephemeral query, see the About Ephemeral Data in gRPC ["https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/93x/progammability/guide/b-cisco-nexus-9000-series-nx-os-programmability-guide-93x/b-cisco-nexus-9000-series-nx-os-programmability-guide-93x_chapter_0101111.html#d40535e2038a1635"] section of the Cisco Nexus 9000 Series NX-OS Programmability Guide, Release 9.3(x). Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the August 2025 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: August 2025 Semiannual Cisco FXOS and NX-OS Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75667"].

07

also known as (5)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisco_csafncsc_nlNVDCVE.orgMITRE
published 2025-08-27modified 2026-06-17
09

references (5)

External citations — patches, advisories, analysis.

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