Weekly threat intelligence digest: October 13 - 19, 2025

Executive summary

This week tracked 1 curated intelligence items and 2 newly published CVEs. The risk profile remained acute, with 2 critical and 0 high severity disclosures in public reporting. Priority themes were vulnerability and active exploitation pressure around internet-exposed enterprise software.

Critical & high priority

1. Microsoft October 2025 Patch Tuesday Fixes Actively Exploited RDP Vulnerability

• What happened: Microsoft released the October 2025 Patch Tuesday updates addressing approximately 75 security vulnerabilities, with the most critical being an actively exploited vulnerability in Windows Remote Desktop Services. CVE-2025-42301 allows an unauthenticated attacker to achieve remote code execution against RDP servers by sending specially crafted connection requests. A second zero-day, CVE-2025-42302, is a privilege escalation flaw in the Windows Print Spooler that continues the long history of Print Spooler security issues.
• Who's affected: Organizations exposing RDP services to the internet are at immediate risk from the RDP vulnerability. Despite longstanding guidance to avoid direct RDP exposure, scans show millions of RDP endpoints remain publicly accessible. The Print Spooler vulnerability affects all Windows versions with the Print Spooler service enabled, which includes most Windows installations by default.
• What to do: Patch or mitigate affected systems on an expedited timeline, validate exposure from external attack paths, and add targeted detections for known exploitation behavior.

Notable developments

Most tracked items this week were critical/high vulnerability stories, with no major medium or informational shifts requiring separate strategic treatment.

Vulnerability landscape

This week saw 2 newly published CVEs in NVD-aligned tracking for the reporting window.

• Critical: 2
• High: 0
• Medium: 0
• Low: 0
• Top affected vendors: Microsoft (2), Windows (2)

Priority CVEs observed in this window included:

• CVE-2025-42301 (Critical): Vendor advisory lists a high-priority issue requiring review.
• CVE-2025-42302 (Critical): Vendor advisory lists a high-priority issue requiring review.

Recommended actions

1. Prioritize internet-facing patching: Resolve critical and high-severity items first, with strict SLA enforcement for edge systems.
2. Harden identity and admin pathways: Require phishing-resistant MFA, reduce standing privileges, and audit privileged sessions.
3. Operationalize detections: Convert this week's CVEs and campaign behaviors into SIEM/SOAR detections and threat hunts.
4. Protect recovery paths: Isolate and test backups, then validate restoration workflows against ransomware and destructive attack scenarios.

Looking ahead

For October 20 - 26, 2025, expect continued exploitation attempts against newly disclosed enterprise software flaws, plus copycat scanning after proof-of-concept publication. Teams should maintain elevated monitoring for externally exposed assets and review compensating controls where patch windows are delayed.