A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

A improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in Fortinet FortiOS version 7.4.0 through 7.4.4, 7.2.0 through 7.2.8, 7.0.0 through 7.0.15, 6.4.0 through 6.4.15 and before 6.2.16, Fortinet FortiProxy version 7.4.0 through 7.4.2, 7.2.0 through 7.2.9 and before 7.0.15, Fortinet FortiManager version 7.4.0 through 7.4.2, 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.14 and before 6.2.13, Fortinet FortiAnalyzer version 7.4.0 through 7.4.2, 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.14 and before 6.2.13, Fortinet FortiVoice version 7.0.0 through 7.0.2 before 6.4.8 and Fortinet FortiWeb before 7.4.2 may allow an unauthenticated attacker in a man-in-the-middle position to impersonate the management device (FortiCloud server or/and in certain conditions, FortiManager), via intercepting the FGFM authentication request between the management device and the managed device

A improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in Fortinet FortiOS version 7.4.0 through 7.4.3, 7.2.0 through 7.2.7, 7.0.0 through 7.0.14, 6.4.0 through 6.4.15 and 6.2.0 through 6.2.16, Fortinet FortiProxy version 7.4.0 through 7.4.2, 7.2.0 through 7.2.9, 7.0.0 through 7.0.15 and 2.0.0 through 2.0.14, Fortinet FortiManager version 7.4.0 through 7.4.2, 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.14 and 6.2.0 through 6.2.13, Fortinet FortiAnalyzer version 7.4.0 through 7.4.2, 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.14 and 6.2.0 through 6.2.13, Fortinet FortiVoice version 7.0.0 through 7.0.2, 6.4.0 through 6.4.8 and 6.0.0 through 6.0.12 and Fortinet FortiWeb version 7.4.0 through 7.4.2, 7.2.0 through 7.2.10, 7.0.0 through 7.0.10 allows an unauthenticated attacker in a man-in-the-middle position to impersonate the management device (FortiCloud server or/and in certain conditions, FortiManager), via intercepting the FGFM authentication request between the management device and the managed device

A improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in FortiOS, FortiProxy, FortiManager, FortiAnalyzer, FortiVoice and FortiWeb may allow an unauthenticated attacker in a man-in-the-middle position to impersonate the management device (FortiCloud server or/and in certain conditions, FortiManager), via intercepting the FGFM authentication request between the management device and the managed device

CVE-2025-26466A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

A client-side enforcement of server-side security in Fortinet FortiAnalyzer-BigData at least version 7.4.0 and 7.2.0 through 7.2.6 and 7.0.1 through 7.0.6 and 6.4.5 through 6.4.7 and 6.2.5, FortiManager version 7.4.0 through 7.4.1 and 7.2.0 through 7.2.4 and 7.0.0 through 7.0.11 and 6.4.0 through 6.4.14, FortiAnalyzer version 7.4.0 through 7.4.1 and 7.2.0 through 7.2.4 and 7.0.0 through 7.0.11 and 6.4.0 through 6.4.14 allows attacker to improper access control via crafted requests.

A client-side enforcement of server-side security vulnerability [CWE-602] in FortiAnalyzer may allow an authenticated attacker with at least read-only permission to execute sensitive operations via crafted requests.

CVE-2024-6387 A signal handler race condition was found in OpenSSH's server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). This could lead to remote code execution with root privileges.

An exposure of sensitive information to an unauthorized actor vulnerability [CWE-200] in FortiManager, FortiAnalyzer & FortiAnalyzer-BigData may allow an adom administrator to enumerate other adoms and device names via crafted HTTP or HTTPS requests.