CVE-2026-18577

CISA KEV

Published Aug 2, 2026 Modified Aug 3, 2026 CWE-288

Description

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1

Is your site exposed to CVE-2026-18577?

Run a free security scan — no signup, results in seconds.

EPSS — Exploit Prediction

0.0148

Probability of exploitation

0.71%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Aug 3, 2026 Remediation due: Aug 6, 2026

Weakness Type (CWE)

CWE-288 CWE-288

References

Other References

https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ https://www.cve.org/CVERecord?id=CVE-2026-18556 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577

Frequently Asked Questions

What is CVE-2026-18577? +

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1 This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How do I check if I'm vulnerable to CVE-2026-18577? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-40582

ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the /api/public/user/login endpoint validates only the username and …

CVE-2026-33591

A vulnerability in Wapt Server before version 2.6.1.17813 allows a remote unauthenticated attacker to bypass security restriction using a specially …

CVE-2026-18574

An authentication bypass vulnerability in Check Point Security Management Server and Multi-Domain Security Management Server (MDS) could allow an unauthenticated …

CVE-2025-23217

mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface …

CVE-2025-2080

Optigo Networks Visual BACnet Capture Tool and Optigo Visual Networks Capture Tool version 3.1.2rc11 contain an exposed web management service …

CVE-2025-29996

This vulnerability exists in the CAP back office application due to improper implementation of OTP verification mechanism in its API …