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CISA Warns of Critical ScreenConnect Vulnerability Actively Exploited in Attacks

CISA added actively exploited ConnectWise ScreenConnect flaw CVE-2026-84869 to the KEV catalog, setting a September 14 patch deadline.

CISA added CVE-2026-84869, a critical improper privilege management and missing authorization flaw (CWE-269, CWE-862) in ConnectWise ScreenConnect, to its Known Exploited Vulnerabilities Catalog on September 11, 2026, confirming active exploitation. The flaw lets attackers transfer files to a device and execute them during an active remote ScreenConnect session without authorization or host-user confirmation, enabling payload delivery, unauthorized tools, and persistence while blending into legitimate remote-management traffic. CISA set a September 14 remediation deadline under BOD 26-04 and flagged the vulnerability as requiring forensic triage. ConnectWise has published a security bulletin, and defenders are urged to review exposure, sessions, file-transfer records, and outbound connections.

Cyber Security News · 8h agoExploit / PoC in the wild 4 sourcesCVE-2026-848691

CVE-2026-86218 | N-able N-central Pre-Authentication Remote Code Execution Vulnerability

N-able N-central pre-auth RCE CVE-2026-86218 (CVSS 10.0) is actively exploited; CISA added it to KEV and a hotfix is available.

CVE-2026-86218 is a critical pre-authentication remote code execution flaw (CWE-96 static code injection) in N-able N-central servers, scored 10.0 CVSS 4.0 by N-able and 9.8 CVSS 3.1 by NIST. N-able fixed it in N-central 2026.3 Hotfix 4 (build 2026.3.1.14) on September 5, 2026, and has already patched hosted NCOD environments. CISA added the CVE to its Known Exploited Vulnerabilities catalog on September 8, 2026, citing evidence of active exploitation, though researchers have not attributed every reported N-central compromise to this flaw. Horizon3 released a NodeZero Rapid Response test to validate exposure and recommends log review for prior compromise.

Horizon3.ai · 8h agoExploit / PoC in the wild 14 sourcesCVE-2026-862182

Critical Issabel PBX Command Execution Vulnerability Exploited in the Wild

Unauthenticated attackers exploit CVE-2026-89026 in Issabel PBX via forged JWT tokens to run OS commands; exploitation observed since September 9.

CVE-2026-89026 (CVSS v4 9.3) stems from a hard-coded HS256 JWT signing key in Issabel Framework's pbxapi/index.php, letting unauthenticated attackers forge bearer tokens and execute OS commands through the Asterisk Manager Interface originate endpoint. Issabel Framework versions before commit b97dbaf0b71c1c36f841e672b664afbeb02773bd are affected. Shadowserver Foundation first observed exploitation on September 9, 2026, and VulnCheck added the flaw to its Known Exploited Vulnerabilities database.

Cyber Security Newsupdated · 8h agofirst · 10h agoExploit / PoC in the wild 2 sourcesCVE-2026-890261

Acronis Plugin Vulnerability in cPanel and Plesk Exploited in the Wild

Acronis patched CVE-2026-87886 (CVSS 7.8), a local privilege escalation flaw in its cPanel and Plesk backup plugins, exploited in targeted attacks.

Acronis released fixes for CVE-2026-87886 (CVSS 7.8, CWE-276), an insecure file permissions flaw in Linux-based backup components for cPanel & WHM and Plesk that enables local privilege escalation. The vendor observed limited, targeted exploitation in the wild before patches shipped. Fixes are available in Backup plugin for cPanel & WHM 1.9.3 HF3 and Backup extension for Plesk 1.8.11. A local attacker with low privileges could gain elevated access to backup data, control panels, and other customer accounts on shared hosting infrastructure.

Cyber Security Newsupdated · 13h agofirst · 16h agoExploit / PoC in the wild 6 sourcesCVE-2026-87886