CVE-2023-27351

PaperCut — PaperCut NG/MF Improper Authentication Vulnerability

CISA KEV · in the CISA KEV catalog since 2026-04-20

What EVULNABLE says

EVULNABLE Risk · priority 87/100 Immediate Intelligence coverage 75/90 — no pre-patch disclosure data
Overdue by 4 monthsRansomwareCISA KEVActively Exploited

Why it matters: Listed in the CISA KEV catalog, and an EPSS probability of 0.781.

Patch Immediately

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2023-27351
MeasureValueSource
CVSS base score 7.5 NVD
FIRST EPSS 0.781 (99.54th pctl) FIRST
Actively exploited Confirmed CISA KEV
Ransomware campaign use Known CISA KEV
CISA remediation deadline 2026-05-04 — Overdue by 4 months CISA KEV
Intelligence coverage 75/90 — no pre-patch disclosure data

What CISA says to do

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.