# CVE-2026-18577

## Summary

- **CVE ID:** CVE-2026-18577
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:A)
- **CWE:** CWE-288
- **Published:** Aug 2, 2026
- **Last Modified:** Aug 4, 2026

## Description

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

## Affected Products

- N-able — N-central (0)
- N-able — N-central (2026.3.1.7)

## References

- [CNA](https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm)
- [CNA](https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/)
- [CNA](https://www.cve.org/CVERecord?id=CVE-2026-18556)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577)
- [CISA-ADP](https://www.n-able.com/blog/n-central-security-update-august-2-2026)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 54.07%
- **EPSS Percentile:** 98.9

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Aug 3, 2026
- **Due Date:** Aug 6, 2026

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._