Executive Summary
In early 2026, two critical vulnerabilities were identified in Progress ShareFile's Storage Zones Controller (SZC), a component widely used for secure file sharing. The first, CVE-2026-2699, is an authentication bypass flaw that allows unauthenticated attackers to access restricted configuration pages. The second, CVE-2026-2701, enables remote code execution through malicious file uploads. Exploiting these vulnerabilities in sequence permits attackers to gain unauthorized access and execute arbitrary code on affected systems. (bleepingcomputer.com)
The disclosure of these vulnerabilities underscores the persistent threat posed by sophisticated cyberattacks targeting enterprise file-sharing solutions. Organizations are urged to promptly apply the security updates provided by Progress to mitigate potential risks associated with these flaws. (bleepingcomputer.com)
Why This Matters Now
The public availability of proof-of-concept exploits for these vulnerabilities increases the urgency for organizations to patch their systems immediately to prevent potential exploitation. (365trust.me)
Attack Path Analysis
An attacker exploited an authentication bypass vulnerability (CVE-2026-2699) in Progress ShareFile's Storage Zones Controller to gain unauthorized access to the administrative interface. Utilizing this access, the attacker modified configuration settings and exploited a remote code execution vulnerability (CVE-2026-2701) to upload and execute a malicious webshell, achieving full control over the server. Subsequently, the attacker moved laterally within the network, established command and control channels, exfiltrated sensitive data, and deployed ransomware to disrupt operations.
Kill Chain Progression
Initial Compromise
Description
The attacker exploited CVE-2026-2699, an authentication bypass vulnerability, to gain unauthorized access to the ShareFile administrative interface.
Related CVEs
CVE-2026-2699
CVSS 9.8An authentication bypass vulnerability in Progress ShareFile Storage Zones Controller allows unauthenticated access to the admin interface, enabling attackers to modify configuration settings.
Affected Products:
Progress ShareFile Storage Zones Controller – 5.x
Exploit Status:
proof of conceptCVE-2026-2701
CVSS 9.1A remote code execution vulnerability in Progress ShareFile Storage Zones Controller allows attackers to execute arbitrary code by uploading and extracting malicious files.
Affected Products:
Progress ShareFile Storage Zones Controller – 5.x
Exploit Status:
proof of concept
MITRE ATT&CK® Techniques
Exploit Public-Facing Application
Exploitation for Client Execution
Valid Accounts
Spearphishing Attachment
Web Protocols
Exfiltration Over C2 Channel
Potential Compliance Exposure
Mapping incident impact across multiple compliance frameworks.
PCI DSS 4.0 – Ensure that all system components and software are protected from known vulnerabilities by installing applicable vendor-supplied security patches.
Control ID: 6.2
NYDFS 23 NYCRR 500 – Cybersecurity Policy
Control ID: 500.03
DORA – ICT Risk Management Framework
Control ID: Article 5
CISA ZTMM 2.0 – Implement strong authentication mechanisms to verify user identities.
Control ID: Pillar 1: Identity
NIS2 Directive – Cybersecurity Risk Management Measures
Control ID: Article 21
Sector Implications
Industry-specific impact of the vulnerabilities, including operational, regulatory, and cloud security risks.
Financial Services
Progress ShareFile vulnerabilities enable pre-auth RCE attacks against secure file transfer systems, threatening financial data exfiltration and regulatory compliance violations.
Health Care / Life Sciences
ShareFile RCE flaws risk patient data exposure through compromised file sharing platforms, violating HIPAA requirements and enabling ransomware infiltration.
Legal Services
Authentication bypass and remote code execution vulnerabilities in ShareFile threaten confidential legal document repositories and client privileged communications.
Government Administration
ShareFile Storage Zone Controller exploits enable unauthenticated access to sensitive government file systems, compromising classified information and operational security.
Sources
- New Progress ShareFile flaws can be chained in pre-auth RCE attackshttps://www.bleepingcomputer.com/news/security/new-progress-sharefile-flaws-can-be-chained-in-pre-auth-rce-attacks/Verified
- You're not supposed to ShareFile with everyone: Progress ShareFile pre-auth RCE chain (CVE-2026-2699 & CVE-2026-2701)https://labs.watchtowr.com/youre-not-supposed-to-sharefile-with-everyone-progress-sharefile-pre-auth-rce-chain-cve-2026-2699-cve-2026-2701/Verified
- Progress ShareFile Security Bulletinhttps://www.progress.com/securityVerified
Frequently Asked Questions
Cloud Native Security Fabric Mitigations and ControlsCNSF
Aviatrix Zero Trust Cloud Native Security Fabric (CNSF) is pertinent to this incident as it embeds security directly into the cloud infrastructure, potentially limiting the attacker's ability to move laterally and exfiltrate data.
Control: Cloud Native Security Fabric (CNSF)
Mitigation: While Aviatrix CNSF may not prevent initial unauthorized access due to application vulnerabilities, it could limit the attacker's ability to exploit further by enforcing strict segmentation and access controls.
Control: Zero Trust Segmentation
Mitigation: Aviatrix's Zero Trust Segmentation could likely limit the attacker's ability to escalate privileges by enforcing strict access controls and minimizing trust relationships between workloads.
Control: East-West Traffic Security
Mitigation: Aviatrix's East-West Traffic Security would likely restrict the attacker's ability to move laterally by monitoring and controlling internal traffic between workloads.
Control: Multicloud Visibility & Control
Mitigation: Aviatrix's Multicloud Visibility & Control could likely detect and limit unauthorized command and control communications by providing comprehensive monitoring across cloud environments.
Control: Egress Security & Policy Enforcement
Mitigation: Aviatrix's Egress Security & Policy Enforcement would likely limit data exfiltration by controlling and monitoring outbound traffic to unauthorized destinations.
While Aviatrix CNSF may not prevent the deployment of ransomware, its segmentation and access controls could likely limit the spread and impact of such attacks by containing them within isolated segments.
Impact at a Glance
Affected Business Functions
- File Sharing
- Data Storage
- Collaboration Tools
Estimated downtime: 7 days
Estimated loss: $500,000
Potential exposure of sensitive corporate documents and client data.
Recommended Actions
Key Takeaways & Next Steps
- • Implement Zero Trust Segmentation to enforce least privilege access and prevent unauthorized lateral movement.
- • Deploy Inline IPS (Suricata) to detect and block known exploit patterns and malicious payloads.
- • Utilize Cloud Firewall (ACF) to control outbound traffic and prevent unauthorized data exfiltration.
- • Enhance Threat Detection & Anomaly Response capabilities to identify and respond to suspicious activities promptly.
- • Regularly update and patch systems to mitigate known vulnerabilities and reduce the attack surface.
