CVE-2023-2533

Name: CVE-2023-2533
Creator: NVD / NIST
Published: 2023-06-20T15:15:11.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 29.46%

Last modified Jun 17, 2026

CVE-2023-2533 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 29.46% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

29.46%

97.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Aug 18, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Papercut	Papercut Mf	< 20.1.8
Papercut	Papercut Mf	>= 21.0.0, < 21.2.12
Papercut	Papercut Mf	>= 22.0.0, < 22.1.1
Papercut	Papercut Ng	< 20.1.8
Papercut	Papercut Ng	>= 21.0.0, < 21.2.12
Papercut	Papercut Ng	>= 22.0.0, <= 22.1.1

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

Timeline

Published: Jun 20, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-2533?

How severe is CVE-2023-2533?

CVE-2023-2533 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 29.46% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-2533?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2533?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST