CVE-2026-76460
CRITICAL(10.0)KEV — Aktiv ausgenutztCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 10 — Kritisch
- EPSS 76% — sehr wahrscheinlich ausgenutzt
- Im CISA KEV-Katalog (aktiv ausgenutzt)
Erwähnungen (letzte 60 Tage)
CISA KEV
Bestätigt ausgenutzt
EPSS-Score
75.6%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
10
Technische Schwere
SecBoard-Einordnung
CVE-2026-76460 betrifft eine API des Cisco Identity Services Engine (ISE) und ermöglicht einem nicht authentifizierten, entfernten Angreifer die Umgehung der Authentifizierung. Die Schwachstelle liegt in einer unzureichenden Authentifizierungskontrolle eines API-Endpunkts. Ein erfolgreicher Exploit könnte unautorisierten Zugriff auf das betroffene Gerät über die webbasierte Verwaltungsschnittstelle ermöglichen.
KI-gestützte Einordnung auf Basis der NVD-Daten.
Beschreibung
A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass authentication. This vulnerability is due to insufficient authentication control on an API endpoint. An attacker could exploit this vulnerability by sending a crafted request to an affected API endpoint. A successful exploit could allow the attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.
Erkennung & Indikatoren
Ausnutzung
Aktiv ausgenutzt (CISA KEV). Cisco became aware of active exploitation in the wild.
Behobene Versionen
- Cisco ISE and ISE-PIC 3.1 Patch 12
- 3.2 Patch 11
- 3.3 Patch 12
- 3.4 Patch 7
- 3.5 Patch 4
Threat-Hunting-Queries
Review access.log for suspicious usernames.
Sentinel/Defender KQL
IdentityInfo
| where Application == "Cisco ISE" // Adjust based on your log source for Cisco ISE
| where RawData has "access.log" and RawData has "dummyuser" // Replace 'dummyuser' with patterns of suspicious usernames
| project TimeGenerated, Computer, RawData, AccountName, ActivitySplunk SPL
index=your_cisco_ise_index sourcetype=ise_logs "access.log" "dummyuser" // Replace 'your_cisco_ise_index' and 'dummyuser'Sigma
title: Cisco ISE Authentication Bypass Attempt
status: experimental
description: Detects suspicious usernames in Cisco ISE access logs, indicative of CVE-2026-76460 exploitation.
logsource:
product: cisco
service: ise
detection:
selection:
EventID: "access.log"
Message|contains: "dummyuser" # Replace 'dummyuser' with patterns of suspicious usernames
condition: selection
level: highElastic ES|QL
FROM cisco_ise_logs
WHERE message LIKE '%access.log%' AND message LIKE '%dummyuser%' // Replace 'cisco_ise_logs' with your actual index and 'dummyuser' with patterns of suspicious usernames
SELECT @timestamp, host.name, messageSecBoard-generated · behavioral · requires customization — Von SecBoard erzeugt und nicht in einer Zielumgebung validiert. Vor dem Einsatz an die eigene Protokollierung anpassen.
Ausgewertete Quellen
- https://www.bleepingcomputer.com/news/security/infratrust-report-warns-network-management-systems-under-attack/
- https://thehackernews.com/2026/09/weekly-recap-cisco-0-day-ai-agent-rce.html
- https://www.heise.de/news/Warnung-vor-Cyberattacken-auf-Google-Pixel-Cisco-ISE-und-Acronis-Backup-11456146.html
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76460
Betroffene Produkte
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch10:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch11:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch5:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch6:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch7:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch8:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch9:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch10:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*