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CVE-2026-18577

HIGHCVSS 4.0 · 8.2 · a5532a13-c4dd-4202-bef1-e0b8f2f8d12b

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/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

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

CISA KEV: known exploited

Added: 2026-08-03 · Due: 2026-08-06

Known ransomware use: Unknown

EPSS: 14.62% · Percentile: 96.6%

As of 2026-10-27

EPSS estimates exploitation probability over the next 30 days. KEV due dates apply to US federal civilian agencies. Confirm your affected versions in vendor advisories.

CWE: CWE-288 · Published: 2026-08-02T23:16:26.210 · Modified: 2026-10-23T22:10:00.160

Sources: NIST NVD, CISA KEV, FIRST EPSS. NVD and EPSS cached up to 6 hours; KEV up to 12 hours.

All CVSS assessments
  • CVSS 4.0: 8.2 (HIGH) · a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
    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/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
  • CVSS 3.1: 8.1 (HIGH) · NIST NVD
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References and fixes