Cyber Security News on X: " Ransomware Actors Exploiting Palo Alto GlobalProtect Flaw ...

X • October 12, 2026

🚨 Ransomware Actors Exploiting Palo Alto GlobalProtect Flaw for Stealthy VPN Access

Ransomware groups are actively exploiting CVE-2026-0257, an authentication bypass affecting Palo Alto Networks PAN-OS GlobalProtect and Prisma Access.

reports that multiple threat groups, including Qilin and Settra, are using the flaw to create unauthorized VPN sessions and enter internal networks through trusted remote access services.

The activity presents a serious detection challenge because attackers connect through an organization’s own VPN.

Their traffic can look like normal remote work, giving them time to steal credentials, move between systems, collect sensitive data, or prepare ransomware before security teams recognize the intrusion.

The biggest challenge is when malicious activity blends into legitimate access. Continuous monitoring, rapid threat detection, and strong authentication controls are essential to reducing this risk. 🔐

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Ransomware Groups Exploit Palo Alto VPN Vulnerability CVE-2026-0257 Ransomware groups, including Qilin and Settra, are exploiting a high-severity vulnerability (CVE-2026-0257) in Palo Alto Networks' PAN-OS GlobalProtect and Prisma Access products. This authentication bypass flaw allows attackers to create unauthorized VPN sessions, posing significant detection challenges as their traffic can mimic legitimate remote work. Despite a security patch released five months ago, multiple threat intelligence teams have reported ongoing exploitation attempts. The vulnerability was disclosed on May 13, 2026, and added to CISA's Known Exploited Vulnerabilities list on May 29, 2026. Organizations are urged to immediately upgrade affected systems and implement additional security measures to mitigate risks. Continuous monitoring and strong authentication controls are recommended to detect and prevent unauthorized access. 2 sources 72

Extracted Entities

Cyber Security News on X: " Ransomware Actors Exploiting Palo Alto GlobalProtect Flaw ...

The full story

Extracted Entities

Attack Types (1)

CVEs (1)

MITRE ATT&CK (2)

Platforms (2)

Ransomware Groups (2)