CVE-2026-2699: Customer Managed ShareFile Storage Zones Controller (SZC) allows an unauthenticated attacker to access restric

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-2699 is a critical-severity flaw (CVSS 9.8) affecting sharefile storage zones controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Customer Managed ShareFile Storage Zones Controller (SZC) allows an unauthenticated attacker to access restricted configuration pages. This leads to changing system configuration and potential remote code execution.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	58.4% (top 1%)
CISA exploited list	No
Weakness	CWE-284, CWE-698
Published	2026-04-02
Last modified	2026-10-26

Publisher (CNA): Progress Software Corporation · Vendor: progress

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 14:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

progress sharefile storage zones controller UPGRADE

Affected: >= 5.0.0 and < 5.12.4

Fixed in: 5.12.4

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy sharefile-storage-zones-controller || rpm -q sharefile-storage-zones-controller || sharefile-storage-zones-controller --version

2. UPGRADE to 5.12.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sharefile-storage-zones-controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sharefile-storage-zones-controller

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison sharefile-storage-zones-controller sudo apt install sharefile-storage-zones-controller=<VERSION_BEFORE_5.0.0> sudo apt-mark hold sharefile-storage-zones-controller

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sharefile-storage-zones-controller sudo dnf downgrade sharefile-storage-zones-controller-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add sharefile-storage-zones-controller

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: watchtowrlabs/watchTowr-vs-Progress-ShareFile-CVE-2026-2699 (3 stars)
GitHub PoC: 0xBlackash/CVE-2026-2699 (0 stars)
Nuclei scan template: Progress ShareFile Storage Zones Controller - Authentication Bypass

Advisories and coverage

Research and news

watchTowr Labs: You’re Not Supposed To ShareFile With Everyone (Progress ShareFile Pre-Auth RCE Chain CVE-2026-2699 & CVE-2026-2701) 2026-04-02

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2699?

sharefile storage zones controller: upgrade to 5.12.4. Exact commands for each OS are on this page.

Is CVE-2026-2699 being exploited?

CVE-2026-2699 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2699 affect?

CVE-2026-2699 affects sharefile storage zones controller. Severity is critical (CVSS 9.8). Customer Managed ShareFile Storage Zones Controller (SZC) allows an unauthenticated attacker to access restricted configuration pages. This leads to changing system configuration and potential remote code execution.

How urgent is CVE-2026-2699?

Priority 72/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-2701 CRITICAL 9.1 UPGRADE Authenticated user can upload a malicious file to the server and execute it, which leads to remote code execut
CVE-2026-15724 HIGH 8.7 UPGRADE In Progress ShareFile Storage Zones Controller versions prior to 5.12.5 and 6.0.2, an authenticated administra
CVE-2026-16139 HIGH 7.2 UPGRADE In Progress ShareFile Storage Zones Controller versions <= 5.12.5 and <= 6.0.2, an authenticated zone administ
CVE-2026-16138 HIGH 8.0 UPGRADE In Progress ShareFile Storage Zones Controller v5.12.5 and below versions, unsafe deserialization of untrusted
CVE-2026-16137 HIGH 7.2 UPGRADE In Progress ShareFile Storage Zones Controller v5.12.5 and below, a party with valid zone credentials can perf

References

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