CVE-2023-2533

HIGH8.4

CISA KEV

Published 2023-06-20 · Updated 2026-06-17 · Source help@fluidattacks.com

Summary

CVE-2023-2533 is a high-severity (CVSS 8.4) vulnerability in PaperCut NG/MF. CISA added it to the Known Exploited Vulnerabilities catalog on July 28, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by August 18, 2025. CISA does not currently list it as used in ransomware campaigns. PaperCut has 5 vulnerabilities in the KEV catalog, 2 of them linked to ransomware.

All 5 known-exploited PaperCut vulnerabilities →

Description

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code. This could be exploited if the target is an admin with a current login session. Exploiting this would typically involve the possibility of deceiving an admin into clicking a specially crafted malicious link, potentially leading to unauthorized changes.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

CWE-352CWE-352

CISA Known-Exploited Vulnerability

Product: PaperCut — NG/MF

Name: PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability

Date added: 2025-07-28 · Due: 2025-08-18

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

More exploited PaperCut vulnerabilities

Most recently added to CISA KEV

CVE-2026-82078
NG/MF — PaperCut NG/MF Unsafe Reflection Vulnerability
added 2026-08-31
CVE-2026-81578
NG/MF — PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
added 2026-08-31
CVE-2023-27351
RANSOMWARE
NG/MF — PaperCut NG/MF Improper Authentication Vulnerability
added 2026-04-20
CVE-2023-27350
RANSOMWARE
MF/NG — PaperCut MF/NG Improper Access Control Vulnerability
added 2023-04-21

View all →

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