High severity · published Aug 17, 2026
CVE-2026-16139
Arbitrary file write via path traversal in Progress ShareFile Storage Zones Controller potentially leading to remote code execution
7.2
CVSS
0.9%
EPSS
No
On KEV
Description
In Progress ShareFile Storage Zones Controller versions <= 5.12.5 and <= 6.0.2, an authenticated zone administrator can exploit improper validation in the download preparation flow, enabling attacker-controlled files to be written outside the intended preparation directory. This can lead to remote code execution in v5 versions. Remote code execution is not confirmed on v6 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
ShareFile Storage Zones Controller · Progress
through 5.12.5; 6.0.0 through 6.0.2 · source: vendor, NVD
Affected product
SS
ShareFile Storage Zones Controller
Progress
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16139
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16139
Vendor Advisory
https://support.sharefile.com/s/article/ShareFile-Storage-Zone-Controller-SZC-Service-Disruption-Guidance-Login-Issues-and-Access-Information
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