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CVE-2026-86206, CVE-2026-86207: N-able N-central Authentication Bypass (FIXED)
Overview While conducting research into a recent N-able N-central authentication bypass vulnerability ( CVE-2026-18577 ), Rapid7 Labs discovered two new vulnerabilities affecting the latest version of N-central. When chained together, these two vulnerabilities allow a remote unauthenticated attacker to bypass authentication and create a new attacker-controlled System administrator account on an affected server. CVE ID Description CWE CVSSv4 CVE-2026-86206 Semicolon/Forwarded access-control bypass
N-able ships second N-central hotfix as attackers keep exploiting CVE-2026-18577
To help customers fend off ongoing attacks, N-able released a second security hotfix for N‑central, its monitoring and management (RMM) solution popular with managed service providers (MSPs). “Hotfix 2 is required, even if you already applied the earlier hotfix. Hotfix 2 supersedes Hotfix 1 with additional hardening measures to further protect you and your customers,” the company said, and shared additional indicators of compromise observed in attacks. A second hotfix to “expand protections” Earlier this … More → The post N-able ships second N-central hotfix as attackers keep exploiting CVE-2026-18577 appeared first on Help Net Security .
CVE-2026-18577: N-able N-central Authentication Bypass Exploited in the Wild
Overview On August 2, 2026, N-able published a security advisory for CVE-2026-18577, an authentication bypass vulnerability affecting N-central that was discovered being exploited in-the-wild after an incomplete fix for an earlier authentication bypass issue, CVE-2026-18556 was disclosed. CVE-2026-18577 allows a remote unauthenticated attacker to bypass authentication and obtain administrative control of vulnerable N-central servers in affected deployments. N-able N-central is a widely deployed Remote Monitoring and Management (RMM) platform used by managed service providers (MSPs) and enterprise IT teams to centrally administer servers, workstations, network devices, and other managed assets.
Attackers Exploit N-able Patch Bypass Flaw on RMM Servers
Over the weekend, the vendor discovered another vector of authentication bypass CVE-2026-18577 that gives attackers administrator access.
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