Path Traversal in Microsoft Windows
CVE-2023-39143
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).
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.801 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.806 · newest: 0.801 · change: -0.006
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.horizon3.ai/cve-2023-39143-papercut-path-traversal-file-upload-rce-vulnerab… (Exploit, Third Party Advisory)
- www.papercut.com/kb/Main/securitybulletinjuly2023/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-39143?
- CVE-2023-39143 is a critical-severity vulnerability in Microsoft Windows, classified under Path Traversal. CVSS score: 9.8/10. Published 2023-08-04.
- How severe is CVE-2023-39143?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-39143 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.