CVE-2022-44900

Name: CVE-2022-44900
Creator: NVD / NIST
Published: 2022-12-06T20:15:10.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 2.24%

Last modified Jun 17, 2026

CVE-2022-44900 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.. EPSS estimates a 2.24% chance of exploitation in the next 30 days.

Description

A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

2.24%

80.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Py7zr Project	Py7zr	< 0.20.1

References

http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406Patch, Third Party Advisory
https://lessonsec.com/cve/cve-2022-44900/Exploit, Third Party Advisory
http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406Patch, Third Party Advisory
https://lessonsec.com/cve/cve-2022-44900/Exploit, Third Party Advisory

Timeline

Published: Dec 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-44900?

How severe is CVE-2022-44900?

CVE-2022-44900 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 2.24% probability of exploitation in the next 30 days.

How do I fix CVE-2022-44900?

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-2022-44900?

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

Scan your code now

Source: NVD / NIST