PT-2026-40443 · Efw · Efw

CVE-2026-44257 · Published 2026-05-12 · Updated 2026-05-13

Positive Technologies (AI Summary)

CVSS v4.0

9.3

Critical

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions efw4.X versions prior to 4.08.010

Description The unZip function in efw.file.FileManager writes zip entries to disk using new File(baseDir, zipEntry.getName()) without performing a canonical-path check. This allows an attacker to use entry names containing path traversal sequences, such as ../../../pwned.jsp, to escape the intended extraction directory and write files to any location accessible by the Tomcat process, including the servlet context root. When combined with the /uploadServlet multipart endpoint and an event that triggers file.saveUploadFiles and FileManager.unZip, an unauthenticated remote attacker can upload a JSP webshell to execute arbitrary commands with the privileges of the Tomcat user.

Recommendations Update to version 4.08.010.

Exploit

Fix

RCE

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-44257

GHSA-Q7JX-7X5R-R9F6

Affected Products

Efw

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44257.json · Exploit
• 🔥 https://github.com/efwGrp/efw4.X/security/advisories/GHSA-q7jx-7x5r-r9f6 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-44257 · Security Note
• https://osv.dev/vulnerability/CVE-2026-44257 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/2054458294941385031 · Twitter Post
• https://twitter.com/CVEnew/status/2054323993717747832 · Twitter Post
• https://t.me/CVEtracker/53553 · Telegram Post