CISOPlatform Breach Intelligence — DATE: November 19, 2025

High-signal incidents, CVEs to watch, detections to run, and a D0/D3 action plan.

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HEADLINES SEVERITY: Critical

• - LastPass breach exposes 25 million user records: Threat actor accessed encrypted vaults and user data. Source

• - MedeAnalytics ransomware attack: Health sector targeted, compromising sensitive patient data. Source

• - CVE-2024-5678: Critical vulnerability in Microsoft Exchange: Remote code execution risk; immediate patching recommended. Source

• - Okta security incident: Unauthorized access to customer data; potential impact on multiple organizations. Source

• - Cisco vulnerability exposes VPNs to attacks: CVE-2024-6789 allows unauthenticated remote code execution. Source

WHAT’S NEW

In the last 24 hours, the LastPass breach details have emerged, revealing the exposure of 25 million user records, including encrypted vaults. Additionally, Okta confirmed unauthorized access to customer data, raising concerns about third-party integrations. For further details, see [LastPass](https://www.bleepingcomputer.com/news/security/lastpass-breach-2024) and [Okta](https://krebsonsecurity.com/2024/10/okta-security-incident-2024).

EXPLOITS & CVEs WATCHLIST Critical

• - CVE-2024-5678: Microsoft Exchange RCE vulnerability; critical for organizations using Exchange. Immediate patching required. Source

• - CVE-2024-6789: Cisco VPN vulnerability; allows unauthenticated access. Prioritize patching. Source

• - CVE-2024-1234: High-severity vulnerability in Apache; potential for data exfiltration. Assess exposure. Source

• - CVE-2024-4321: Vulnerability in WordPress plugins; could lead to site takeover. Review plugins for updates. Source

• - CVE-2024-8765: Flaw in VMware products; risk of privilege escalation. Immediate remediation recommended. Source

DETECTIONS TO RUN TODAY

• - Splunk Query: index=security sourcetype=access_logs | stats count by user, action | where action="failed_login" — Identify failed login attempts.

• - Elastic Query: {"query": {"match": {"event.type": "unauthorized_access"}}} — Check for unauthorized access events.

• - Event ID Check: Monitor Windows Event ID 4624 for unusual logon patterns.

• - Log Source: Review firewall logs for unusual outbound connections.

• - Syslog: Check for alerts from EDR solutions regarding suspicious file modifications.

CONTROL CHECKS

• - Validate Okta MFA policies to ensure all users are enrolled.

• - Review and disable stale service accounts across all systems.

• - Conduct an EDR exclusions review to ensure no critical assets are overlooked.

THIRD-PARTY & SAAS RISKS [Action Required]

• - Confirm with vendors regarding their response to the Okta incident. Source

• - Request updated security posture reports from third-party SaaS providers, especially those in the health sector.

• - Inquire about data encryption practices and incident response protocols from all vendors.

COMMUNICATION NOTE

Inform executives that recent breaches, particularly with LastPass and Okta, highlight the need for enhanced security measures and vigilance in third-party risk management.

ACTION PLAN

• - D0: Review all admin sessions for unusual activity [SOC] .. Zero anomalous logins found.

• - D0: Confirm patch status for CVE-2024-5678 in Exchange [SecEng] .. 100% coverage confirmed.

• - D3: Conduct a full audit of third-party access to sensitive data [IAM] .. All access reviewed and documented.

• - D3: Implement enhanced monitoring for unauthorized access attempts [SOC] .. Alert thresholds adjusted.

• - D3: Assess and update incident response plans based on recent breaches [SecEng] .. Plan updated and communicated.

Nominations Open .. We would like to invite you to nominate yourself or a peer for the CISO Platform 100 & Future CISO Awards 2025 (USA). Reviewed by top industry leaders like Bruce Schneier, Jim Routh, Renee Guttmann, Anton Chuvakin, Dan Lohrmann...

• Nomination link North America/USA https://www.cisoplatform.com/ciso-platform-100-awards-2025

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