Detect Cisco Catalyst SD-WAN Manager Sensitive Information Exposure (CVE-2026-20133) in IBM QRadar
Detects exploitation attempts targeting CVE-2026-20133, a CWE-200 information disclosure vulnerability in Cisco Catalyst SD-WAN Manager that allows unauthorized actors to access sensitive configuration and credential data. This vulnerability is actively exploited in the wild (CISA KEV) and may be leveraged to pivot into SD-WAN infrastructure.
MITRE ATT&CK
- Tactic
- Credential Access Discovery Collection
QRadar Detection Query
SELECT
sourceip,
destinationip,
destinationport,
URL,
COUNT(*) AS request_count,
MIN(starttime) AS first_seen,
MAX(starttime) AS last_seen,
COUNT(DISTINCT URL) AS unique_endpoints
FROM events
WHERE
LOGSOURCETYPENAME(devicetype) IN ('Cisco SD-WAN', 'Apache HTTP Server', 'Cisco ASA')
AND (
URL ILIKE '%/dataservice/%'
OR URL ILIKE '%/auditlog%'
OR URL ILIKE '%/device/config%'
OR URL ILIKE '%/template/%'
OR URL ILIKE '%/setting/configuration%'
OR URL ILIKE '%/admin/user%'
)
AND destinationport IN (443, 8443, 8080)
AND DATEFORMAT(starttime, 'yyyy-MM-dd HH:mm:ss') > DATEADD('hour', -24, NOW())
GROUP BY sourceip, destinationip, destinationport, URL
HAVING COUNT(*) > 10 OR COUNT(DISTINCT URL) > 3
ORDER BY request_count DESCAQL query for IBM QRadar that detects high-frequency or high-diversity access to Cisco SD-WAN Manager sensitive REST API endpoints, flagging potential exploitation of the CVE-2026-20133 information disclosure vulnerability.
Data Sources
Required Tables
False Positives & Tuning
- Cisco vManage internal processes querying configuration data
- Authorized automation scripts performing configuration audits
- SD-WAN monitoring integrations polling operational state endpoints
- Load balancer health checks hitting management API endpoints
Other platforms for CVE-2026-20133
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Unauthenticated SD-WAN Manager Device Config Enumeration
Expected signal: HTTP GET requests to SD-WAN Manager management port (8443) for paths /dataservice/device, /dataservice/device/config, and /dataservice/admin/user from the test host IP. Response codes may be 200 (vulnerable) or 401/403 (patched/mitigated).
- Test 2SD-WAN Manager Template and Credential Harvest Simulation
Expected signal: File creation events in /tmp/sdwan_harvest_test alongside network connections to vManage port 8443. Curl process making multiple sequential HTTP GET requests to /dataservice/template/device, /dataservice/setting/configuration, and /dataservice/auditlog.
- Test 3Automated SD-WAN Manager API Endpoint Enumeration with Token Extraction
Expected signal: Rapid sequential HTTP GET requests (9 requests within ~5 seconds with 0.5s delay) to multiple /dataservice/ subpaths from a single source IP. HTTP status codes logged for each endpoint. Process: bash script executing curl in a loop.
References (4)
- https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems
- https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v
- https://nvd.nist.gov/vuln/detail/CVE-2026-20133
Unlock Pro Content
Get the full detection package for CVE-2026-20133 including response playbook, investigation guide, and atomic red team tests.