CVE-2023-39143

Name: CVE-2023-39143
Creator: NVD / NIST
Published: 2023-08-04T17:15:11.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 78.70%

Last modified Jun 17, 2026

CVE-2023-39143 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling attackers to upload, read, or delete arbitrary files. This leads to remote code execution when external device integration is enabled (a very common configuration).. EPSS estimates a 78.70% chance of exploitation in the next 30 days.

Description

PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling attackers to upload, read, or delete arbitrary files. This leads to remote code execution when external device integration is enabled (a very common configuration).

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

78.70%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Papercut	Papercut Mf	< 22.1.3
Papercut	Papercut Ng	< 22.1.3

References

https://www.horizon3.ai/cve-2023-39143-papercut-path-traversal-file-upload-rce-vulnerability/Exploit, Third Party Advisory
https://www.papercut.com/kb/Main/securitybulletinjuly2023/Vendor Advisory
https://www.horizon3.ai/cve-2023-39143-papercut-path-traversal-file-upload-rce-vulnerability/Exploit, Third Party Advisory
https://www.papercut.com/kb/Main/securitybulletinjuly2023/Vendor Advisory

Timeline

Published: Aug 4, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39143?

How severe is CVE-2023-39143?

CVE-2023-39143 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 78.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39143?

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-2023-39143?

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

Scan your code now

Source: NVD / NIST