Dashboard / CVE-2026-18556

CVE-2026-18556

HIGH CISA KEV
ACT NOW Priority: 0.65 BB Relevance: 78/100
Published: 2026-08-01 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: None
VC: High
VI: None
VA: None

Description

N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.

CISA Known Exploited Vulnerability

Vendor / Product N-able — N-central
Date Added 2026-08-04
Remediation Due 2026-08-07
https://uptime.n-able.com/ ; https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-18556

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
n-able n-central < 2026.1

References & Advisories (3)

https://uptime.n-able.com/
Vendor Advisory

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction
✓ Known exploited (KEV)

CVSS Score

8.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

7.88%
Raw Score 0.078820
Percentile 94.7%
Date 2026-10-28

Intelligence Sources

kev ref →
nvd ref →

External Links