High severity · published Aug 17, 2026
CVE-2026-16138
Remote code execution via unsafe deserialization in Progress ShareFile Storage Zones Controller's CICO service
8.0
CVSS
0.8%
EPSS
No
On KEV
Description
In Progress ShareFile Storage Zones Controller v5.12.5 and below versions, unsafe deserialization of untrusted file metadata can allow a user with write access to a Network share to execute arbitrary code on the Storage Zones Controller host.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% 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 · source: vendor, NVD
Affected product
SS
ShareFile Storage Zones Controller
Progress
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16138
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16138
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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