Fortinet Security Advisories & CVEs
24 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
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
High [CVE-2026-43284 +1] Linux Kernel vulnerability Dirty Frag
CVSSv3 Score: 7.9 Linux kernel is impacted by CVE-2026-43284 and CVE-2026-43500 which chained together create the Dirty Frag vulnerability.CVE-2026-43284 In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(), so later paths that may modify packet data can first make a private copy. The IPv4/IPv6 datagram append paths did not set this flag when splicing pages into UDP skbs. That leaves an ESP-in-UDP packet made from shared pipe pages looking like an ordinary uncloned nonlinear skb. ESP input then takes the no-COW fast path for uncloned skbs without a frag_list and decrypts in place over data that is not owned privately by the skb. Mark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching TCP. Also make ESP input fall back to skb_cow_data() when the flag is present, so ESP does not decrypt externally backed frags in place. Private nonlinear skb frags still use the existing fast path. This intentionally does not change ESP output.
High [CVE-2026-31431] Linux Kernel Vulnerability - CVE-2026-31431
CVSSv3 Score: 7.8 CVE-2026-31431 In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly. Revised on 2026-05-13 00:00:00
High [CVE-2025-53844] Out-of-bounds access in CAPWAP daemon
CVSSv3 Score: 8.3 An Out-Of-Bounds Write vulnerability [CWE-787] in FortiOS capwap daemon may allow an attacker controlling an authenticated FortiAP FortiExtender or FortiSwitch to gain execution privileges on the FortiGate device Revised on 2026-05-12 00:00:00
High [CVE-2026-22828] Heap-based buffer overflow in oftpd daemon
CVSSv3 Score: 7.3 A heap-based buffer overflow vulnerability [CWE-122] in FortiAnalyzer Cloud oftpd daemon may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. Successful exploitation would require a large amount of effort in preparation because of ASLR and network segmentation Revised on 2026-04-14 00:00:00
High [CVE-2026-39809] Multiple SQL Injections
CVSSv3 Score: 7.1 An Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability [CWE-89] in FortiClientEMS may allow an authenticated attacker to run arbitrary SQL queries on the database via sending crafted requests. Revised on 2026-04-14 00:00:00
High [CVE-2026-39815] SQL Injection via API
CVSSv3 Score: 7.9 An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] in FortiDDoS-F may allow an authenticated attacker to run arbitrary SQL queries on the database by sending crafted HTTP requests. Revised on 2026-04-14 00:00:00
High [CVE-2026-24018] UNIX symbolic link (Symlink) following vulnerability in Fortinet FortiClientLinux 7.4.0 through 7.4.4, FortiClientLinux 7.2.2…
A UNIX symbolic link (Symlink) following vulnerability in Fortinet FortiClientLinux 7.4.0 through 7.4.4, FortiClientLinux 7.2.2 through 7.2.12 may allow a local and unprivileged user to escalate their privileges to root.
High [CVE-2026-24017] Improper Control of Interaction Frequency vulnerability [CWE-799] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2…
An Improper Control of Interaction Frequency vulnerability [CWE-799] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow a remote unauthenticated attacker to bypass the authentication rate-limit via crafted requests. The success of the attack depends on the attacker's resources and the password target complexity.
High [CVE-2026-22627] buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiSwitchAXFixed 1.0.0…
A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiSwitchAXFixed 1.0.0 through 1.0.1 may allow an unauthenticated attacker within the same adjacent network to execute unauthorized code or commands on the device via sending a crafted LLDP packet.
High [CVE-2025-54820] Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager…
A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager 7.2.0 through 7.2.10, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to execute unauthorized commands via crafted requests, if the service is enabled. The success of the attack depends on the ability to bypass the stack protection mechanisms.
High [CVE-2026-21743] missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions…
A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.
High [CVE-2025-62676] FortiClient: Improper Link Resolution Before File Access ('Link Following') vulnerability [CWE-59] vulnerability in Fortinet…
An Improper Link Resolution Before File Access ('Link Following') vulnerability [CWE-59] vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.4, FortiClientWindows 7.2.0 through 7.2.12, FortiClientWindows 7.0 all versions may allow a local low-privilege attacker to perform an arbitrary file write with elevated permissions via crafted named pipe messages.
High [CVE-2025-52436] FortiSandbox: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in…
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.