Deserialization in Progress Sharefile Storage Zones Controller

CVE-2026-16138

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.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-16138: rose from 0.003 to 0.008.

EPSS over last 30 days · oldest: 0.003 · newest: 0.008 · change: +0.006

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16138?
CVE-2026-16138 is a high-severity vulnerability in Progress Sharefile Storage Zones Controller, classified under Deserialization of Untrusted Data. CVSS score: 8.0/10. Published 2026-08-17.
How severe is CVE-2026-16138?
High severity. CVSS v3 base score is 8.0 out of 10.