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CISA Flags Critical Fortinet FortiWeb Vulnerability: CVE-2025-58034 Joins KEV Catalog
Executive Summary
In November 2025, CISA added CVE-2025-58034, a Fortinet FortiWeb OS Command Code Injection vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog following evidence of in-the-wild exploitation against internet-exposed FortiWeb appliances. Threat actors leveraged this critical flaw to execute arbitrary system commands remotely, enabling them to gain unauthorized access, pivot laterally, or deploy additional malware. The urgency was amplified by ongoing exploitation and a recently published Fortinet security advisory, prompting CISA to recommend an accelerated one-week remediation deadline for federal and enterprise environments.
This incident exemplifies the continued targeting of web application infrastructure by attackers exploiting unpatched devices. The rapid exploitation timeline, coupled with directives like BOD 23-02, highlights the increasing regulatory focus and operational risk posed by known—but unremediated—vulnerabilities in public-facing systems.
Why This Matters Now
The CVE-2025-58034 vulnerability is being actively exploited, with attackers targeting internet-facing FortiWeb devices. Organizations face heightened risk if patches are delayed, especially with regulatory mandates demanding swift remediation. Timely action is critical to prevent compromise and meet compliance standards.
Attack Path Analysis
The attacker exploited the Fortinet FortiWeb OS command injection vulnerability (CVE-2025-58034) to achieve initial access to a publicly exposed web application. Upon compromise, the attacker likely escalated privileges by executing arbitrary commands for deeper system access. With foothold established, lateral movement may have occurred via east-west traffic within the cloud or hybrid environment to target internal systems or workloads. The attacker established command and control communication channels, potentially using encrypted or covert outbound traffic. Sensitive data may have been exfiltrated through allowed egress paths or by abusing outbound web traffic. Finally, the attacker could have impacted business operations through data corruption, deployment of malware, or disruptive actions.
Kill Chain Progression
Initial Compromise
Description
Attacker exploited the FortiWeb OS command injection vulnerability on a publicly exposed management interface to gain initial access.
Related CVEs
CVE-2025-58034
CVSS 7.2An OS Command Injection vulnerability in Fortinet FortiWeb versions 7.0.0 through 8.0.1 allows authenticated attackers to execute unauthorized code via crafted HTTP requests or CLI commands.
Affected Products:
Fortinet FortiWeb – 7.0.0 through 7.0.11, 7.2.0 through 7.2.11, 7.4.0 through 7.4.10, 7.6.0 through 7.6.5, 8.0.0 through 8.0.1
Exploit Status:
exploited in the wildCVE-2025-64446
CVSS 9.8A relative path traversal vulnerability in Fortinet FortiWeb versions 7.0.0 through 8.0.1 allows unauthenticated attackers to execute administrative commands on targeted systems.
Affected Products:
Fortinet FortiWeb – 7.0.0 through 7.0.11, 7.2.0 through 7.2.11, 7.4.0 through 7.4.9, 7.6.0 through 7.6.4, 8.0.0 through 8.0.1
Exploit Status:
exploited in the wild
MITRE ATT&CK® Techniques
This technique mapping is designed for SEO, filtering, and initial triage and may be expanded with further ATT&CK enrichment.
Exploit Public-Facing Application
Command and Scripting Interpreter: Unix Shell
Exploitation of Remote Services
Exploitation for Privilege Escalation
Impair Defenses: Disable or Modify Tools
Network Sniffing
Valid Accounts
Potential Compliance Exposure
Mapping incident impact across multiple compliance frameworks.
PCI DSS 4.0 – Public-facing application vulnerability management
Control ID: 6.2.4
NYDFS 23 NYCRR 500 – Cybersecurity Policy
Control ID: 500.03
DORA – ICT risk management framework
Control ID: Article 9(2)
CISA ZTMM 2.0 – Continuous identification and management of internet-exposed systems
Control ID: Asset Management: Internet-Exposed Asset Inventory
NIS2 Directive – Vulnerability handling and disclosure
Control ID: Article 21(2)(e)
Sector Implications
Industry-specific impact of the vulnerabilities, including operational, regulatory, and cloud security risks.
Financial Services
CVE-2025-58034 FortiWeb command injection vulnerability threatens financial institutions' web applications, requiring immediate remediation within one week per CISA KEV directive.
Health Care / Life Sciences
Healthcare organizations using FortiWeb face critical OS command injection risks, potentially compromising patient data and HIPAA compliance through web application vulnerabilities.
Government Administration
Federal agencies must remediate FortiWeb CVE-2025-58034 within reduced timeframe per BOD 22-01, as command injection poses significant risk to government networks.
Information Technology/IT
IT sector organizations deploying FortiWeb solutions face immediate command injection exploitation risks, requiring urgent vulnerability management and zero trust segmentation implementation.
Sources
- CISA Adds One Known Exploited Vulnerability to Cataloghttps://www.cisa.gov/news-events/alerts/2025/11/18/cisa-adds-one-known-exploited-vulnerability-catalogVerified
- Fortinet Security Advisory FG-IR-25-513https://fortiguard.fortinet.com/psirt/FG-IR-25-513Verified
- CISA Known Exploited Vulnerabilities Catalog Entry for CVE-2025-58034https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-58034Verified
- TechRadar Article on Fortinet Vulnerability CVE-2025-58034https://www.techradar.com/pro/security/fortinet-admits-it-found-another-worrying-zero-day-being-exploited-in-attacksVerified
Frequently Asked Questions
Cloud Native Security Fabric Mitigations and ControlsCNSF
Implementing Zero Trust segmentation, east-west traffic controls, inline IPS, and strong egress policy enforcement would have limited the attacker’s ability to exploit the vulnerability, escalate privileges, pivot laterally, establish C2, and exfiltrate data. CNSF controls enforce least privilege, real-time threat detection, and comprehensive visibility across the hybrid cloud, reducing the likelihood and impact of such attacks.
Control: Cloud Firewall (ACF)
Mitigation: Prevents exploitation attempts on internet-exposed services.
Control: Inline IPS (Suricata)
Mitigation: Detects and blocks exploitation or privilege escalation payloads.
Control: Zero Trust Segmentation
Mitigation: Limits lateral movement with identity-based microsegmentation.
Control: Egress Security & Policy Enforcement
Mitigation: Detects and blocks unauthorized or suspicious outbound connections.
Control: Multicloud Visibility & Control
Mitigation: Detects and alerts on abnormal data transfer patterns.
Control: Threat Detection & Anomaly Response
Mitigation: Enables rapid detection and containment of impactful malicious actions.
Impact at a Glance
Affected Business Functions
- Web Application Security
- Network Security Operations
Estimated downtime: 3 days
Estimated loss: $500,000
Potential exposure of sensitive configuration data and administrative credentials due to unauthorized code execution.
Recommended Actions
Key Takeaways & Next Steps
- • Immediately restrict public access to all administrative web interfaces and enforce least privilege network policies.
- • Deploy Cloud Firewall and Inline IPS to inspect and block exploitation attempts targeting known vulnerabilities.
- • Implement Zero Trust Segmentation and east-west traffic controls to prevent lateral attacker movement between cloud workloads.
- • Enforce strict egress filtering and real-time anomaly detection to rapidly identify and block C2 or data exfiltration attempts.
- • Maintain continuous visibility and threat monitoring across hybrid/multicloud environments to detect, respond, and adapt to new exploits in real time.
