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    CVE-2021-36194

    Multiple stack-based buffer overflows in the API controllers of FortiWeb 6.4.1, 6.4.0, and 6.3.0 through 6.3.15 may allow an authenticated attacker to achieve arbitrary code execution via specially crafted requests.

    Published:Dec 9, 2021
    Last Modified:Nov 21, 2024
    EPS:Dec 9, 2021
    EPSS Score:0.00987
    CVSS Score:8.8

    Affected Products

    Vendor
    Fortinet
    Product
    Fortiweb

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-40688 (CVSS 7.2) — An out-of-bounds write vulnerability [CWE-787] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWe…
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    CVE-2026-39814 (CVSS 6.7) — A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6…
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    CVE-2026-24640 (CVSS 6.6) — A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, …
    CVE-2026-24017 (CVSS 8.1) — An Improper Control of Interaction Frequency vulnerability [CWE-799] vulnerability in Fortinet FortiWeb 8.0.0 …
    CVE-2025-48840 (CVSS 5.3) — An authentication bypass by spoofing vulnerability in Fortinet FortiWeb 7.6.0 through 7.6.3, FortiWeb 7.4.0 th…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High