CVE-2026-20127

criticalPriorität · handeln · 90OT-Risiko · kritischKEV · ausgenutztEPSS 0.893 · 100. PerzentilExploit · funktionalDEEUNLRUUS
grimoire priorityP0 · Act now
Exploitable?
Yes · in the wild
CISA KEV · 10 exploits · funktional
Likely / severe?
89.3% (100th) EPSS
CVSS 10 · critical
Is it mine?
720 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

hinzugefügt 2026-02-25beheben bis 2026-02-27

erforderliche Maßnahme Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

EPSS · bewertet 2026-10-27

Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability

A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric. 

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

10.0
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 6
v3.110criticalAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 6
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL
v3.110criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · Cisco PSIRT US
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

05

Exploits (10)

Öffentlicher Proof-of-Concept- und Exploit-Code.

06

betroffene Produkte (720)

Betroffene Produkte und Versionsbereiche.

07

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0071Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN ManagerNL2026-02-25csaf · ncsc_nlNL

    Cisco heeft meerdere kwetsbaarheden verholpen in de Cisco Catalyst SD-WAN Manager.

  • WID-SEC-W-2026-0516Cisco Catalyst SD-WAN Manager und SD-WAN Controller: Mehrere SchwachstellenDeutsch2026-02-25csaf · cert_bundDE

    Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in Cisco Catalyst SD-WAN Manager ausnutzen, um Administratorrechte zu erlangen, die Authentifizierung zu umgehen, Befehle mit Netadmin-Rechten auszuführen, sensible Systeminformationen zu lesen und beliebige Dateien auf dem System zu überschreiben.

  • cisco-sa-sdwan-rpa-EHchtZkCisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability2026-02-25csaf · cisco_csafUS

    A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

08

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

09

quellen

Welche Quellen diesen Datensatz belegen und wann.

11

Referenzen (5)

Externe Belege — Patches, Meldungen, Analysen.

scry

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