CVE-2026-18577

Q: How do I fix CVE-2026-18577?

Upgrade n-central to 2026.3 or later.

Q: Is CVE-2026-18577 being actively exploited?

Yes. CVE-2026-18577 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-08-06. Treat it as a priority whatever its CVSS score says.

Q: How severe is CVE-2026-18577?

CVE-2026-18577 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-18577 affect?

Published advisories record a fix for n-central (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHCISA KEVEPSS 90th pctl

8.1

CVSS v3

NVD

Description

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

CWE-288

How to fix

Remediation Available

n-centralNVD

Affected:< 2026.3Fixed in:2026.3CVE-2026-18577derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.10%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-08-06

References

Patch1

documentation.n-able.com

Vendor Advisory1

n-able.com

Government Resource1

cisa.gov

Release Notes1

status.n-able.com

VDB Entry1

cve.org

Related Vulnerabilities

Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2024-1709	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2024-27198	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2025-4427	Medium	5.3	100%	KEV	Fix
CVE-2024-55591	Critical	9.8	98%	KEV + Ransom	Fix
CVE-2023-46747	Critical	9.8	97%	KEV + Ransom	-

Common questions

How do I fix CVE-2026-18577?

Upgrade n-central to 2026.3 or later.

Is CVE-2026-18577 being actively exploited?

Yes. CVE-2026-18577 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-08-06. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2026-18577?

CVE-2026-18577 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-18577 affect?

Published advisories record a fix for n-central (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-18577

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-04.