CVE-2026-20182

criticalPriorität · handeln · 90OT-Risiko · kritischKEV · ausgenutztEPSS 0.918 · 100. PerzentilExploit · funktionalDEEUNLRUUS
grimoire priorityP0 · Act now
Exploitable?
Yes · in the wild
CISA KEV · 4 exploits · funktional
Likely / severe?
91.8% (100th) EPSS
CVSS 10 · critical
Is it mine?
597 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

hinzugefügt 2026-05-14beheben bis 2026-05-17

erforderliche Maßnahme Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlined 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 Authentication Bypass Vulnerability

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks.  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 the 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

v3.110criticalAV: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.

CWE-287USCWE-287US
05

Exploits (4)

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

06

betroffene Produkte (597)

Betroffene Produkte und Versionsbereiche.

20 von 597 angezeigt
07

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0157Kwetsbaarheden verholpen in Cisco Catalyst SD-WAN Controller en ManagerNL2026-05-15csaf · ncsc_nlNL

    Cisco heeft een kwetsbaarheden verholpen in de Catalyst SD-WAN Controller en Manager producten.

  • WID-SEC-W-2026-1534Cisco Catalyst SD-WAN Controller: Schwachstelle ermöglicht Erlangen von AdministratorrechtenDeutsch2026-05-14csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Catalyst SD-WAN Controller ausnutzen, um Administratorrechte zu erlangen und so die Netzwerkkonfiguration für die SD-WAN-Struktur zu manipulieren.

  • cisco-sa-sdwan-rpa2-v69WY2SWCisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability2026-05-14csaf · cisco_csafUS

    May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"] was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The Indicators of Compromise ["#IOC"] section of this advisory includes Show Control Connections guidance to help with system checks. 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 the 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. Important: To preserve possible indicators of compromise, customers should issue the request admin-tech ["https://www.cisco.com/c/en/us/support/docs/routers/sd-wan/225842-remediate-catalyst-sd-wan-security.html"] command from each of the control components in the SD-WAN deployment before upgrading. After the admin-tech file has been collected, software should be upgraded at the earliest opportunity. Before upgrading an SD-WAN deployment to a fixed release, retain relevant logs. After upgrading, verify that the system has not been compromised by checking the logs for the indicators of compromise as documented in this advisory. If the logs show indicators of compromise and the system is confirmed to be compromised, applying the software update alone will not resolve the vulnerability. In such cases, follow the specific remediation steps that are provided by the Cisco Technical Assistance Center (TAC) to help secure the system.

08

auch bekannt als (5)

Weitere Namen und Kennungen dieser Entität.

09

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducert_bundcisco_csafncsc_nlNVDCVE.orgMITRE
veröffentlicht 2026-05-14geändert 2026-10-26
10

Referenzen (8)

Externe Belege — Patches, Meldungen, Analysen.

scry

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