CVE-2023-2533
PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 August 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 29.25% probability · 98th percentile
- CISA KEV
- Listed 28 July 2025 · due 18 August 2025
- Weakness
- CWE-352
- Affected
- papercut/papercut mf · papercut/papercut ng
- Source
- help@fluidattacks.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.papercut.com/kb/Main/SecurityBulletinJune2023 ; https://nvd.nist.gov/vuln/detail/CVE-2023-2533
References
- https://fluidattacks.com/advisories/arcangel/Exploit, Third Party Advisory
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023Vendor Advisory
- https://fluidattacks.com/advisories/arcangel/Exploit, Third Party Advisory
- https://www.papercut.com/kb/Main/SecurityBulletinJune2023Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-2533US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.