FO
Network Security
FortiOS
On CISA KEVExploited in the wildRansomware-linked
282
CVEs
21
On KEV
9.8
Max CVSS
2
New 30D
AdvisoryHigh
CISA Adds Two Known Exploited Vulnerabilities to Catalog
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.
CVE-2025-61624 Fortinet Multiple Products Path Traversal Vulnerability
CVE-2026-102764 BeyondTrust Remote Support Authentication Bypass by Spoofing Vulnerability
These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.
Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.
While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified criteria . ...
Oct 16, 2026·CISA Advisories
VulnerabilityMedium
PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions
A suspected advanced threat actor has been observed exploiting a security flaw in Fortinet FortiOS to deliver a previously unreported memory-resident ARM64 malware known as PEERSTITCH.
The attack involves the exploitation of CVE-2025-61624 (CVSS score: 5.4), a path traversal flaw in the command line interpreter of FortiOS, FortiPAM, FortiProxy, and FortiSwitchManager that could allow a
Oct 16, 2026·The Hacker News
VulnerabilityHigh
[CISA KEV] CVE-2025-61624: Fortinet Multiple Products - Fortinet Multiple Products Path Traversal Vulnerability
FortiOS, FortiPAM, FortiProxy, and FortiSwitchManager contain a path traversal vulnerability that may allow an authenticated attacker with admin profile and at least read-write permissions to write or delete arbitrary files via specific CLI commands.
MPMultiple ProductsCVE-2025-61624
Oct 16, 2026·CISA KEV
AdvisoryHigh
CISA Adds Four Known Exploited Vulnerabilities to Catalog
CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.
CVE-2025-25249 Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability
CVE-2026-19490 Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
CVE-2026-87491 Google Chromium V8 Out of Bounds Write Vulnerability
CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability
These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.
Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.
While BOD 26-04 applies only to FCEB agencies, CISA encourages all org...
Sep 9, 2026·CISA Advisories
VulnerabilityMedium
Siemens RUGGEDCOM APE1808
View CSAF
Summary
Fortinet has published information on vulnerabilities in FortiOS. This advisory lists the related Siemens Industrial products. Siemens recommends to contact customer support for additional information, and follow Fortinet advisory for workarounds and mitigation measures.
The following versions of Siemens RUGGEDCOM APE1808 are affected:
RUGGEDCOM APE1808 vers:all/* (CVE-2026-23573, CVE-2026-59839)
CVSS
Vendor
Equipment
Vulnerabilities
v3 6.1
Siemens
Siemens RUGGEDCOM APE1808
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Background
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
Vulnerabilities
Expand All +
CVE-2026-23573
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiPAM 1.8.0, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.3, FortiProxy 7.2.0 through 7.2.9 may allow an ...
Aug 12, 2026·CISA Advisories
AdvisoryHigh
CISA Adds Two Known Exploited Vulnerabilities to Catalog
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.
CVE-2025-68686 Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
CVE-2026-16812 Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability
These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise.
Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.
While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified cri...
Jul 27, 2026·CISA Advisories
VulnerabilityHigh
[CISA KEV] CVE-2025-68686: Fortinet FortiOS - Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
Fortinet FortiOS contains an exposure of sensitive information to an unauthorized actor vulnerability. This may allow a remote unauthenticated attacker to bypass the patch developed for the symbolic link persistency mechanism observed in some post-exploit cases, via crafted HTTP requests. An attacker would need first to have compromised the product via another vulnerability, at filesystem level.
FOFortiOSCVE-2025-68686
Jul 27, 2026·CISA KEV
VulnerabilityCritical
Siemens RUGGEDCOM APE1808 Devices
View CSAF
Summary
Fortinet has published information on vulnerabilities in FORTIOS. This advisory lists the related Siemens Industrial products. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version.
The following versions of Siemens RUGGEDCOM APE1808 Devices are affected:
RUGGEDCOM APE1808 vers:all/*, vers:all/* (CVE-2026-24858, CVE-2025-55018, CVE-2025-62439, CVE-2025-64157)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
Siemens
Siemens RUGGEDCOM APE1808 Devices
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), Improper Verification of Source of a Communication Channel, Use of Externally-Controlled Format String, Authentication Bypass Using an Alternate Path or Channel
Background
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
Vulnerabilities
Expand All +
CVE-2025-55018
An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header
View CVE Details
Affected Products
Siemens RUGGEDCOM APE1...
Mar 12, 2026·CISA Advisories
VulnerabilityHigh
[CISA KEV] CVE-2026-24858: Fortinet Multiple Products - Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability
Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.
MPMultiple ProductsCVE-2026-24858
Jan 27, 2026·CISA KEV
VulnerabilityHigh
[CISA KEV] CVE-2025-59718: Fortinet Multiple Products - Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
Fortinet FortiOS, FortiSwitchMaster, FortiProxy, and FortiWeb contain an improper verification of cryptographic signature vulnerability that may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML message. Please be aware that CVE-2025-59719 pertains to the same problem and is mentioned in the same vendor advisory. Ensure to apply all patches mentioned in the advisory.
MPMultiple ProductsCVE-2025-59718
Dec 16, 2025·CISA KEV
