Vulnerability details

CVE-2026-18556

Actively exploited

N-able N-central

Unauthenticated administrative account takeover

CVSS 4.0

8.2High

Official description

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

CVSS scores

Score	Version	Source	Vector
8.2High	4.0	CVEProject cvelistV5 (CNA) (N-able)	`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`

Affected products

Vendor	Product	Versions	Source
N-able	N-central	v ≤ 2026.1	CVEProject cvelistV5 (CNA)

References and advisories

https://uptime.n-able.com/
https://www.n-able.com/blog/n-central-security-update-august-2-2026 vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556 government-resource

Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published: 2026-08-01
Last updated: 2026-08-05
State: Published
Assigner (CNA): N-able
Kolun priority: 76 · High

CISA KEV catalog

Date added: 2026-08-04
Due date: 2026-08-07
Used in ransomware: Unknown

Exploit prediction (EPSS)

7.88%

Probability of exploitation in 30 days

94.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Active
Technical impact: Total

Weaknesses (CWE)

CWE-288
Authentication bypass using an alternate path or channel