EUVD-2026-22327Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
6DescriptionCVE.org
A heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 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
AnalysisAI
Remote code execution in Fortinet FortiAnalyzer Cloud and FortiManager Cloud versions 7.6.2 through 7.6.4 allows unauthenticated remote attackers to execute arbitrary code via crafted network requests exploiting a heap-based buffer overflow (CWE-122). Attack complexity is rated high due to ASLR and network segmentation defenses requiring significant exploitation preparation. CVSS score of 8.1 reflects the critical impact despite defensive barriers. No public exploit identified at time of analysis, though the vulnerability's disclosure by Fortinet suggests patch availability through their security advisory FG-IR-26-121.
Technical ContextAI
This vulnerability exploits a heap-based buffer overflow (CWE-122) in the network request handling layer of Fortinet's cloud management platforms. The affected products - FortiAnalyzer Cloud and FortiManager Cloud - are centralized logging and device management solutions deployed in cloud environments. A heap overflow occurs when user-controlled input exceeds allocated heap memory boundaries, allowing memory corruption. The CVSS vector (AV:N/AC:H/PR:N) indicates network-accessible attack surface requiring no authentication, though high complexity arises from modern exploit mitigations: Address Space Layout Randomization (ASLR) randomizes memory addresses making reliable code execution difficult, while network segmentation limits direct access to management interfaces. Successful exploitation requires advanced techniques like heap spray or information disclosure to bypass ASLR, then precise memory manipulation to achieve arbitrary code execution in the context of the cloud management service.
RemediationAI
Organizations should immediately consult Fortinet's official security advisory FG-IR-26-121 at https://fortiguard.fortinet.com/psirt/FG-IR-26-121 for vendor-recommended patching guidance and upgrade paths. While the input data does not specify the exact patched version number, Fortinet typically releases fixes in subsequent minor or patch releases; administrators should upgrade to the latest available version beyond 7.6.4 following the advisory's instructions. As interim mitigations pending patch deployment, restrict network access to FortiAnalyzer Cloud and FortiManager Cloud management interfaces using firewall rules, VPN requirements, or IP allowlisting to trusted administrative networks only. Implement additional network segmentation to isolate cloud management platforms from untrusted networks. Monitor FortiAnalyzer and FortiManager logs for unusual connection attempts or malformed requests. Given the high attack complexity requiring ASLR bypass, these compensating controls significantly reduce exploitation risk during the patching window.
Fortinet FortiWeb contains a relative path traversal allowing unauthenticated attackers to execute administrative comman
FortiOS and FortiProxy contain an authentication bypass via the Node.js websocket module allowing unauthenticated remote
Fortinet FortiWeb contains an authenticated OS command injection allowing privilege escalation to execute unauthorized c
Fortinet FortiAnalyzer before 5.0.12 and 5.2.x before 5.2.5; FortiSwitch 3.3.x before 3.3.3; FortiCache 3.0.x before 3.0
Buffer overflow in the Cookie parser in Fortinet FortiOS 4.x before 4.1.11, 4.2.x before 4.2.13, and 4.3.x before 4.3.9
A product has a SQL injection vulnerability enabling unauthenticated database compromise through improperly neutralized
Remote code execution in Fortinet FortiClientEMS versions 7.4.5 through 7.4.6 allows unauthenticated attackers to execut
An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] in
Fortinet FortiAnalyzer and FortiManager contain a critical authentication bypass vulnerability (CVE-2026-24858, CVSS 9.8
Authentication bypass in Fortinet FortiOS, FortiProxy, and FortiSwitchManager allows unauthenticated remote attackers to
The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus 5.2.11.5, Emsisoft Anti-Malware 5
The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7,
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today