Fortinet PSIRT Advisory · May 2026

    FortinetScheduled

    12

    Total

    Deduplicated CVEs in this cycle. For Microsoft, only CVEs first published on Patch Tuesday itself count, excluding browser updates, late additions and cloud fixes.

    2

    Critical

    CVEs with CVSS 9.0 or higher (critical per NVD scale).

    1

    Zero-day

    Actively exploited at time of disclosure (CISA KEV or vendor-confirmed).

    1

    KEV

    Listed in CISA's Known Exploited Vulnerabilities catalog: mandatory for US agencies, best practice for everyone.

    1 zero-day / actively exploited

    These vulnerabilities were exploited before or at the time the patch was released. Install the related updates first.

    1 zero-day / actively exploited
    SeverityCVEDescriptionKB articleCVSS
    HighCVE-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.

    Listed in CISA KEV

    		—7.8

    By product family

    Unassigned11 CVEs
    Unassigned
    SeverityCVEDescriptionKB articleCVSS
    CriticalCVE-2026-26083

    A missing authorization vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox Cloud 5.0.2 through 5.0.5, FortiSandbox PaaS 23.4 all versions, FortiSandbox PaaS 23.3 all versions, FortiSandbox PaaS 23.1 all versions, FortiSandbox PaaS 22.2 all versions, FortiSandbox PaaS 22.1 all versions, FortiSandbox PaaS 21.4 all versions, FortiSandbox PaaS 21.3 all versions, FortiSandbox PaaS 5.0.0 through 5.0.1, FortiSandbox PaaS 4.4.5 through 4.4.8 may allow an unauthenticated attacker to execute unauthorized code or commands via HTTP requests.

    		—9.1
    CriticalCVE-2026-44277

    A improper access control vulnerability in Fortinet FortiAuthenticator 8.0.2, FortiAuthenticator 8.0.0, FortiAuthenticator 6.6.0 through 6.6.8, FortiAuthenticator 6.5.0 through 6.5.6 may allow attacker to execute unauthorized code or commands via crafted requests.

    		—9.1
    MediumCVE-2026-25088

    An improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiNDR 7.6.0 through 7.6.2, FortiNDR 7.4.0 through 7.4.9, FortiNDR 7.2 all versions, FortiNDR 7.1 all versions, FortiNDR 7.0 all versions may allow an authenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

    		—5.1
    HighCVE-2025-53844

    A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.

    		—8.3
    MediumCVE-2025-53680

    An improper neutralization of special elements used in an OS command ("OS Command Injection") vulnerability [CWE-78] vulnerability in Fortinet FortiAP 7.6.0 through 7.6.2, FortiAP 7.4.0 through 7.4.5, FortiAP 7.2 all versions, FortiAP 7.0 all versions, FortiAP 6.4 all versions, FortiAP-U 7.0.0 through 7.0.5, FortiAP-U 6.2 all versions, FortiAP-W2 7.4.0 through 7.4.4, FortiAP-W2 7.2 all versions, FortiAP-W2 7.0 all versions allows an authenticated privileged attacker to execute unauthorized code or commands via crafted CLI requests.

    		—6.1
    MediumCVE-2025-53870

    An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiAP 7.6.0 through 7.6.2, FortiAP 7.4.0 through 7.4.5, FortiAP 7.2 all versions, FortiAP 7.0 all versions, FortiAP 6.4 all versions, FortiAP-W2 7.4.0 through 7.4.4, FortiAP-W2 7.2 all versions, FortiAP-W2 7.0 all versions may allow an authenticated attacker to execute unauthorized code or commands via a specifically crafted cli command.

    		—6.5
    MediumCVE-2026-25690

    An improper neutralization of argument delimiters in a command ('argument injection') vulnerability in Fortinet FortiDeceptor 6.0.0 through 6.0.2, FortiDeceptor 5.3.0 through 5.3.3, FortiDeceptor 5.2.0 through 5.2.1, FortiDeceptor 5.1 all versions, FortiDeceptor 5.0 all versions may allow an authenticated attacker with at least read-only admin permission to read log files via HTTP crafted requests.

    		—4.0
    MediumCVE-2025-53681

    An improper neutralization of special elements used in an SQL Command ("SQL Injection&") vulnerability [CWE-89] vulnerability in Fortinet FortiMail 7.6.0 through 7.6.3, FortiMail 7.4.0 through 7.4.5, FortiMail 7.2.0 through 7.2.8 allows an authenticated privileged attacker to execute unauthorized code or commands via specifically crafted HTTP or HTTPS requests.

    		—6.3
    MediumCVE-2026-44279

    An improper export of android application components vulnerability in Fortinet FortiTokenAndroid 6.2 all versions, FortiTokenAndroid 6.1 all versions, FortiTokenAndroid 5.2 all versions may allow attacker to disclose information via an exported Content Provider URI.

    		—5.0
    LowCVE-2026-44278

    A use of hard-coded cryptographic key vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.2, FortiClientWindows 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>

    		—2.1
    MediumCVE-2025-67604

    A use of potentially dangerous function vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow an authenticated attacker to cause a system hang via multiple specially crafted HTTP requests causing crashes.

    		—5.2