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Upgrade to ProDetect Arista VeloCloud Orchestrator On-Prem OS Command Injection (CVE-2026-16812) in IBM QRadar
Detects exploitation attempts and post-exploitation indicators of CVE-2026-16812, an OS command injection vulnerability (CWE-78) in Arista VeloCloud Orchestrator On-Prem, actively exploited in the wild and listed on CISA KEV. Attackers send crafted HTTP requests to the Orchestrator management application that result in arbitrary OS command execution on the underlying host, typically leading to shell spawning, reverse shell callbacks, credential harvesting, or webshell deployment.
MITRE ATT&CK
QRadar Detection Query
SELECT sourceip, destinationip, "URL", UTF8(payload) as decoded_payload, starttime
FROM events
WHERE LOGSOURCETYPENAME(devicetype) ILIKE '%VeloCloud%' OR LOGSOURCETYPENAME(devicetype) ILIKE '%Arista%'
AND ("URL" ILIKE '%/portal%' OR "URL" ILIKE '%/vco%' OR "URL" ILIKE '%/velocloud%' OR "URL" ILIKE '%/api%')
AND (UTF8(payload) ILIKE '%;%' OR UTF8(payload) ILIKE '%&&%' OR UTF8(payload) ILIKE '%$(%' OR UTF8(payload) ILIKE '%wget %' OR UTF8(payload) ILIKE '%curl %' OR UTF8(payload) ILIKE '%/bin/sh%' OR UTF8(payload) ILIKE '%/bin/bash%')
LAST 24 HOURSIdentifies inbound HTTP requests to Arista VeloCloud Orchestrator management endpoints whose payload contains shell metacharacters or command tokens consistent with OS command injection exploitation of CVE-2026-16812.
Data Sources
Required Tables
False Positives & Tuning
- Security scanning tools performing authorized injection testing
- Benign automation payloads that coincidentally include special characters
- Encoded application data unrelated to command execution matching keyword patterns
Other platforms for CVE-2026-16812
Testing Methodology
Validate this detection against 4 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 1Simulate command injection payload via crafted HTTP request
Expected signal: Web/proxy access log entry showing the crafted URI with embedded semicolon and 'id' command token.
- Test 2Spawn shell process from simulated web application parent
Expected signal: Process creation event showing 'sh' or 'bash' with parent process name resembling 'java'.
- Test 3Simulate outbound tool download via curl/wget
Expected signal: Process execution log for curl/wget plus outbound network connection to the lab test server.
- Test 4Drop and remove a test webshell-like file
Expected signal: File creation and deletion event under the simulated web application directory captured by EDR/FIM.
References (4)
- https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
- https://nvd.nist.gov/vuln/detail/CVE-2026-16812
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