CVE-2026-18556
Last modified
CVE-2026-18556 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| N-Able | N-Central | <= 2026.1 |
References
- https://uptime.n-able.com/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-18556?
How severe is CVE-2026-18556?
How do I fix CVE-2026-18556?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-18510The TranslatePress – Translate Multilingual sites with AI Tr…7.2
- CVE-2026-1852The Product Pricing Table by WooBeWoo plugin for WordPress i…6.1
- CVE-2026-1853The BuddyHolis ListSearch plugin for WordPress is vulnerable…6.4
- CVE-2026-18531IBM Maximo Application Suite 9.2, 9.1, and 9.0 could allow a…5.3
- CVE-2026-18536Data::Entropy versions before 0.010 for Perl read remote ent…7.5
- CVE-2026-1854The Post Flagger plugin for WordPress is vulnerable to Store…6.4
- CVE-2026-1856The Appointment Booking Calendar plugin for WordPress is vul…6.4
- CVE-2026-18568XML::Sig versions from 0.29 before 0.72 for Perl allow signa…7.5
- CVE-2026-18569A flaw was found in the backchannel logout endpoint of the k…3.7
- CVE-2026-1857The Gutenberg Blocks with AI by Kadence WP plugin for WordPr…4.3
- CVE-2026-18570A flaw was found in the full-scope-disabled client-policy ex…5.4
- CVE-2026-18571A flaw was found in the user creation component of Keycloak …7.2
Are you affected by CVE-2026-18556?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST