CVE-2018-1000544
CVSS v3
9.8
CRITICAL
EPSS Score
4.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..
Technical details
- Published
- 2018-06-26
Frequently asked questions
What is CVE-2018-1000544?
rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..
Is CVE-2018-1000544 actively exploited?
Active exploitation of CVE-2018-1000544 has not been confirmed. Its EPSS score was 4.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-1000544?
CVE-2018-1000544 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-1000544 affecting your environment?
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