Fortinet Security Advisories & CVEs
139 advisories tracked · FortiGuard PSIRT Advisories · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Polled via the official FortiGuard PSIRT RSS feed (filestore.fortinet.com). PSIRT pages are fetched for new items to extract affected and fixed versions.
Latest Fortinet advisories
High [CVE-2026-70468] authentication bypass using an alternate path or channel vulnerability in Fortinet FortiManager 7.6.1, FortiManager 7.4.3 through 7.4.5, FortiManager 7.2.5 through 7.2.9, FortiManager Cloud 7.6.1, FortiManager Cloud 7.4.3 through 7.4.5, FortiManager Cloud 7.2.5 through 7.2.9 may allow attacker to improper access control via <insert attack vector here>
A authentication bypass using an alternate path or channel vulnerability in Fortinet FortiManager 7.6.1, FortiManager 7.4.3 through 7.4.5, FortiManager 7.2.5 through 7.2.9, FortiManager Cloud 7.6.1, FortiManager Cloud 7.4.3 through 7.4.5, FortiManager Cloud 7.2.5 through 7.2.9 may allow attacker to improper access control
High [CVE-2026-26035] Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password
An Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password
High [CVE-2026-70465] Heap overflow in kernel driver due to missing size validation
CVSSv3 Score: 7.3 A buffer copy without checking size of input vulnerability [CWE-120] in FortiClient Windows may allow an unauthenticated attacker in a position to alter or craft DNS responses to the targeted host to execute arbitrary code via malicious packets. Revised on 2026-08-12 00:00:00
High [CVE-2026-26035] Broken access control in the RADIUS type admin group
CVSSv3 Score: 8.8 An Improper Authentication vulnerability [CWE-287] in the FortiWeb Remote Radius Type Admin Authentication configured with specific, non-default settings may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password Revised on 2026-08-12 00:00:00
High [CVE-2026-70468] FGFM Authentication Weakening via CLI Configuration
CVSSv3 Score: 7.3 An Authentication Bypass Using an Alternate Path or Channel [CWE-288] vulnerability in FortiManager and FortiManager Cloud may allow a remote unauthenticated attacker to impersonate any FortiGate managed by the FortiManager with a specific CLI option set via crafted FGFM requests if the attacker has a valid certificate. Revised on 2026-08-12 00:00:00
Medium [CVE-2026-70466] incomplete list of disallowed inputs vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to improper access control via <insert attack vector here>
A incomplete list of disallowed inputs vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to improper access control Affected products named by the advisory: FortiOS.
Medium [CVE-2026-71407] Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled
A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled. Affected products named by the advisory: FortiProxy.
Medium [CVE-2026-71408] allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service via <insert attack vector here>
A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions may allow attacker to denial of service
Medium [CVE-2026-70466] Content-Encoding WAF Evasion
CVSSv3 Score: 4.8 An incomplete list of disallowed inputs [CWE-184] in FortiWeb WAF may allow an unauthenticated attacker to bypass policies via specifically crafted requests. Revised on 2026-08-12 00:00:00
Medium [CVE-2026-49975] HTTP/2 Bomb CVE-2026-49975
CVSSv3 Score: 5.8 CVE-2026-49975 Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67. Revised on 2026-08-19 00:00:00 Affected product named by the advisory: FortiProxy.
Medium [CVE-2026-71407] Stack buffer overflow in WAD
CVSSv3 Score: 5.1 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS explicit proxy may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled. Revised on 2026-08-12 00:00:00
Medium [CVE-2026-71408] UI DoS attack
CVSSv3 Score: 5.0 An Allocation of Resources Without Limits or Throttling vulnerability [CWE-770] in FortiOS may allow an unauthenticated attacker to perform a slow HTTP DoS attack on the web interface via crafted HTTP requests. Revised on 2026-08-12 00:00:00
Low [CVE-2026-70467] server-side request forgery (ssrf) vulnerability in Fortinet FortiSIEM 7.5.0, FortiSIEM 7.4.0 through 7.4.2, FortiSIEM 7.3.0 through 7.3.5, FortiSIEM 7.2 all versions, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
A server-side request forgery (ssrf) vulnerability in Fortinet FortiSIEM 7.5.0, FortiSIEM 7.4.0 through 7.4.2, FortiSIEM 7.3.0 through 7.3.5, FortiSIEM 7.2 all versions, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions may allow attacker to execute unauthorized code or commands
Low [CVE-2026-70467] Server-Side Request Forgery (SSRF)
CVSSv3 Score: 3.4 A Server-Side request forgery (SSRF) [CWE-918] vulnerability in FortiSIEM GUI may allow an authenticated attacker to send HTTP requests originating from the targeted device via specially crafted HTTP requests Revised on 2026-08-12 00:00:00
High [CVE-2025-53379] Out of bounds read in GUI
CVSSv3 Score: 7.0 An out of bounds read [CWE-125] vulnerability in FortiAuthenticator may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request. Revised on 2026-07-14 00:00:00
High [CVE-2026-59835] Unauthenticated VNC access exposed on all interfaces
CVSSv3 Score: 7.7 An Exposure of Resource to Wrong Sphere vulnerability [CWE-668] in FortiSandbox may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests. Revised on 2026-07-14 00:00:00
Medium [CVE-2026-59837] Stack Buffer Overflow in Log Report
CVSSv3 Score: 5.9 A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiOS, FortiProxy and FortiPAM may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests. Revised on 2026-07-14 00:00:00
Medium [CVE-2025-43892 +1] Buffer overread in authd and wad daemon
CVSSv3 Score: 4.1 A buffer over-read vulnerability [CWE-126] in FortiOS, FortiProxy, and FortiSASE may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request. Revised on 2026-07-14 00:00:00
Medium [CVE-2026-59838] Cross-Site Scripting in Domain parameter
CVSSv3 Score: 5.3 An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability [CWE-80] in FortiSIEM may allow a privileged administrator to execute unauthorized commands via crafted requests. Revised on 2026-07-14 00:00:00
Medium [CVE-2026-59836] Missed certificate verification in AD Connector communication with FortiClient EMS
CVSSv3 Score: 6.7 An Improper Certificate Validation vulnerability [CWE-295] in FortiClient EMS may allow a remote unauthenticated attacker to impersonate an AD Connector via a valid API Key. Revised on 2026-07-14 00:00:00