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CVE record · CVE-2026-18577

Incomplete patch leads to administrative account takeover

CVSS 8.2 HighCriticalIn CISA KEVEPSS 0.15 · 96th percentile

Critical, because:

  • In CISA’s KEV catalogue since 3 Aug 2026: it is known to be exploited.
  • CVSS score 8.2 (7.0 or more) and EPSS 0.15 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: N-able) at 2 Aug 2026, 22:06 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
N-able N-central
  • affected 2026.3 and earlier custom
  • unaffected 2026.3.1.7 custom
Other versions: unaffected
Identifiers
CVE-2026-18577
CNA
N-able
Weakness (CWE)
CWE-288
Tags
Published
2 Aug 2026
Updated
4 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.2 High 4.0 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 CNA (N-able)
  • CISA KEV Listed since 3 Aug 2026: known to be exploited.
  • EPSS 0.15, the 96th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 2 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.