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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 · 10h agoExploit / PoC in the wild 14 sourcesCVE-2026-862182

Week in review: Linux rootkit deployed on F5 BIG-IP APM devices, Cisco FMC bugs exploited

Weekly roundup: Cisco FMC and N-able N-central zero-days exploited in the wild, MikroTik RouterOS hijacks, Microsoft Patch Tuesday ships two exploited zero-days.

State-sponsored and financially-motivated attackers are actively exploiting CVE-2026-20079, a critical authentication bypass in Cisco Secure Firewall Management Center (FMC), alongside CVE-2026-20316. N-able issued an emergency hotfix for CVE-2026-86218, a critical pre-auth RCE in the N-central RMM platform exploited in the wild. CERT Polska disclosed six RouterOS vulnerabilities being chained to hijack internet-exposed MikroTik devices. Microsoft's September 2026 Patch Tuesday shipped a record patch count including two zero-days, while roughly 67,000 Trezor customers faced phishing after a shipping-partner breach and researchers privately disclosed a zero-click WeChat worm to Tencent.

Help Net Security · 3d agoExploit / PoC in the wildCVE-2026-20079CVE-2026-20316CVE-2026-862182· 1 read

Critical NetScaler Vulnerability Exploited in Attacks

CISA added critical Citrix NetScaler flaw CVE-2026-19490 (CVSS 9.3) to its KEV catalog after confirming exploitation of gateway and AAA virtual servers in the wild.

CISA warned that threat actors are exploiting CVE-2026-19490, a critical-severity flaw (CVSS 9.3) affecting NetScaler ADC and NetScaler Gateway appliances configured as a gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. Citrix patched the bug on August 19, and Rapid7 warned it is remotely exploitable without authentication. Sensor data from Previdian shows exploitation ongoing since at least September 3, one day after a public exploit appeared on GitHub, with matching requests observed from three IPs across three countries. CISA added the flaw to its Known Exploited Vulnerabilities catalog, giving federal agencies three days to patch under BOD 26-04.

SecurityWeekupdated · 6d agofirst · 6d agoExploit / PoC in the wild 6 sourcesCVE-2026-194903· 2 reads