How severe is CVE-2026-16138?

CVE-2026-16138 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-16138 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-16138?

CVE-2026-16138 affects Progress Sharefile Storage Zones Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-16138?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-16138 published?

CVE-2026-16138 was published on 2026-08-17 and last updated on 2026-09-02.

CVE-2026-16138

CVE-2026-16138 is a high-severity vulnerability in Progress Sharefile Storage Zones Controller with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Progress Sharefile Storage Zones Controller
Published: 2026-08-17
Last modified: 2026-09-02

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-16138?: CVE-2026-16138 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-16138 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-16138?: CVE-2026-16138 affects Progress Sharefile Storage Zones Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-16138?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-16138 published?: CVE-2026-16138 was published on 2026-08-17 and last updated on 2026-09-02.

References

https://support.sharefile.com/s/article/ShareFile-Storage-Zone-Controller-SZC-Service-Disruption-Guidance-Login-Issues-and-Access-Information

Affected products (1)

cpe:2.3:a:progress:sharefile_storage_zones_controller:*:*:*:*:*:*:*:*

More vulnerabilities in Progress Sharefile Storage Zones Controller

CVE-2026-2699 — Critical (CVSS 9.8): Customer Managed ShareFile Storage Zones Controller (SZC) allows an unauthenticated attacker to access restricted…
CVE-2026-2701 — Critical (CVSS 9.1): Authenticated user can upload a malicious file to the server and execute it, which leads to remote code execution.
CVE-2026-15724 — High (CVSS 8.7): In Progress ShareFile Storage Zones Controller versions prior to 5.12.5 and 6.0.2, an authenticated administrative user…
CVE-2026-16139 — High (CVSS 7.2): In Progress ShareFile Storage Zones Controller versions <= 5.12.5 and <= 6.0.2, an authenticated zone administrator can…
CVE-2026-16137 — High (CVSS 7.2): In Progress ShareFile Storage Zones Controller v5.12.5 and below, a party with valid zone credentials can perform path…

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