FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, aAsynchronous bulk transfer completions can use a freed channel callback after URBDRC channel close, leading to a use after free in urb_write_completion. This vulnerability is fixed in 3.22.0.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-fa67f40526 advisory.

    Update to 3.22.0


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8042-1 advisory.

    It was discovered that FreeRDP incorrectly handled memory under certain circumstances, which could lead to     a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-23948)

    It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause     a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute     arbitrary code. This issue only affected FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24491)

    It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause     a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute     arbitrary code. (CVE-2026-24675, CVE-2026-24679, CVE-2026-24682)

    It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker     could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2026-24676,     CVE-2026-24681)

    It was discovered that FreeRDP did not correctly validate the size of certain variables, which could cause     a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute     arbitrary code. This issue only affected Ubuntu 25.10. (CVE-2026-24677)

    It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker     could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected     Ubuntu 25.10. (CVE-2026-24678)

    It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker     could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected     FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24680)

    It was discovered that FreeRDP had a use after free vulnerability under certain circumstances. An attacker     could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected     Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24683, CVE-2026-24684)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, aAsynchronous bulk     transfer completions can use a freed channel callback after URBDRC channel close, leading to a use after     free in urb_write_completion. This vulnerability is fixed in 3.22.0. (CVE-2026-24681)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
299425	Fedora 42 : freerdp (2026-fa67f40526)	Nessus	Fedora Local Security Checks	high
299346	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : FreeRDP vulnerabilities (USN-8042-1)	Nessus	Ubuntu Local Security Checks	high
297180	Linux Distros Unpatched Vulnerability : CVE-2026-24681	Nessus	Misc.	high

Detections

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CVE-2026-24681

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Tenable Plugins

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high