Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005208 advisory.

    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.

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

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

The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7978-1 advisory.

    It was discovered that GNU Screen incorrectly handled signals when setuid or setgid privileges were being     used, which is not the default in Ubuntu. A local attacker could use this issue to send privileged     signals, possibly leading to a denial of service. This issue only affected Ubuntu 22.04 LTS.
    (CVE-2023-24626)

    It was discovered that GNU Screen incorrectly handled PTY permissions. A local attacker could possibly use     this issue to connect to an unauthorized screen session. (CVE-2025-46802)

    It was discovered that GNU Screen incorrectly handled file access when setuid privileges were being used,     which is not the default in Ubuntu. A local attacker could use this issue to deduce information about     certain file paths. (CVE-2025-46804)

    It was discovered that GNU Screen incorrectly handled signals when setuid privileges were being used,     which is not the default in Ubuntu. A local attacker could use this issue to send privileged signals,     possibly leading to a denial of service. (CVE-2025-46805)

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 version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0404 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2025-46805:
    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.

    CVE-2025-46804:
    A minor information leak when running Screen with setuid-root privileges allosw unprivileged users to     deduce information about a path that would otherwise not be available.


    Affected are older Screen versions, as well as version 5.0.0.

    CVE-2025-46802:
    For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen     session.

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

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

According to the versions of the screen package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen     session.(CVE-2025-46802)

    A minor information leak when running Screen with setuid-root privileges allows unprivileged users to     deduce information about a path that would otherwise not be available.(CVE-2025-46804)

    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.(CVE-2025-46805)

Tenable has extracted the preceding description block directly from the EulerOS screen 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.

  - Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root. (CVE-2025-46805)

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

According to the versions of the screen package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen     session.(CVE-2025-46802)

    A minor information leak when running Screen with setuid-root privileges allows unprivileged users to     deduce information about a path that would otherwise not be available.


    Affected are older Screen versions, as well as version 5.0.0.(CVE-2025-46804)

    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.(CVE-2025-46805)

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

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

According to the versions of the screen package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.(CVE-2025-46805)

    A minor information leak when running Screen with setuid-root privileges allows unprivileged users to     deduce information about a path that would otherwise not be available.Affected are older Screen versions,     as well as version 5.0.0.(CVE-2025-46804)

    For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen     session.(CVE-2025-46802)

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

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

According to the versions of the screen package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP,     SIGCONT to privileged processes when installed setuid-root.(CVE-2025-46805)

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

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

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 4abd86c1-366d-11f0-9c0c-000c29ffbb6c advisory.

    The screen project reports:
    Multiple security issues in screen.

Tenable has extracted the preceding description block directly from the FreeBSD 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 version of screen installed on the remote host is prior to 4.9.1 / 5.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2025-133-01 advisory.

    New screen packages are available for Slackware 15.0 and -current to fix security issues.

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

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

ID	Name	Product	Family	Severity
297094	Unity Linux 20.1070e Security Update: screen (UTSA-2026-005208)	Nessus	Unity Linux Local Security Checks	medium
296747	Ubuntu 22.04 LTS / 24.04 LTS : GNU Screen vulnerabilities (USN-7978-1)	Nessus	Ubuntu Local Security Checks	medium
276230	TencentOS Server 4: screen (TSSA-2025:0404)	Nessus	Tencent Local Security Checks	medium
264421	EulerOS 2.0 SP10 : screen (EulerOS-SA-2025-2113)	Nessus	Huawei Local Security Checks	medium
261879	EulerOS 2.0 SP10 : screen (EulerOS-SA-2025-2085)	Nessus	Huawei Local Security Checks	medium
250127	Linux Distros Unpatched Vulnerability : CVE-2025-46805	Nessus	Misc.	medium
249318	EulerOS 2.0 SP11 : screen (EulerOS-SA-2025-1968)	Nessus	Huawei Local Security Checks	medium
249299	EulerOS 2.0 SP13 : screen (EulerOS-SA-2025-1999)	Nessus	Huawei Local Security Checks	medium
249282	EulerOS 2.0 SP11 : screen (EulerOS-SA-2025-1942)	Nessus	Huawei Local Security Checks	medium
249274	EulerOS 2.0 SP13 : screen (EulerOS-SA-2025-1985)	Nessus	Huawei Local Security Checks	medium
242468	EulerOS 2.0 SP12 : screen (EulerOS-SA-2025-1841)	Nessus	Huawei Local Security Checks	medium
242460	EulerOS 2.0 SP12 : screen (EulerOS-SA-2025-1840)	Nessus	Huawei Local Security Checks	medium
237154	FreeBSD : screen -- multiple vulnerabilities (4abd86c1-366d-11f0-9c0c-000c29ffbb6c)	Nessus	FreeBSD Local Security Checks	critical
235876	Slackware Linux 15.0 / current screen Multiple Vulnerabilities (SSA:2025-133-01)	Nessus	Slackware Local Security Checks	critical

Detections

Analytics

CVE-2025-46805

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

critical

critical