gnuplot is affected by a heap buffer overflow at function utf8_copy_one.

An update of the gnuplot package has been released.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7773-1 advisory.

    ChenYiFan Liu discovered that Gnuplot did not correctly handle certain memory operations. An attacker     could possibly use this issue to cause a denial of service. (CVE-2025-3359, CVE-2025-31178,     CVE-2025-31179, CVE-2025-31181)

    ChenYiFan Liu discovered that Gnuplot did not correctly handle certain memory operations. An attacker     could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS,     Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.04. (CVE-2025-31176, CVE-2025-31180)

    ChenYiFan Liu discovered that Gnuplot did not correctly handle certain memory operations. An attacker     could possibly use this issue to execute arbitrary code or cause a denial of service. This issue only     affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.04.
    (CVE-2025-31177)

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.

  - gnuplot is affected by a heap buffer overflow at function utf8_copy_one. (CVE-2025-31177)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:01811-2 advisory.

    - CVE-2025-31176: invalid read leads to segmentation fault on plot3d_points (bsc#1240325).
    - CVE-2025-31177: improper bounds check leads to heap-buffer overflow on utf8_copy_one (bsc#1240326).
    - CVE-2025-31178: unvalidated user input leads to segmentation fault on GetAnnotateString (bsc#1240327).
    - CVE-2025-31179: improper verification of time values leads to segmentation fault on xstrftime     (bsc#1240328).
    - CVE-2025-31180: unchecked invalid pointer access leads to segmentation fault on CANVAS_text     (bsc#1240329).
    - CVE-2025-31181: double fclose() call leads to segmentation fault on X11_graphics (bsc#1240330).
    - CVE-2025-3359: out-of-bounds read when parsing font names may lead to a segmentation fault     (bsc#1241684).

Tenable has extracted the preceding description block directly from the SUSE 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 SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:01811-1 advisory.

    - CVE-2025-31176: invalid read leads to segmentation fault on plot3d_points (bsc#1240325).
    - CVE-2025-31177: improper bounds check leads to heap-buffer overflow on utf8_copy_one (bsc#1240326).
    - CVE-2025-31178: unvalidated user input leads to segmentation fault on GetAnnotateString (bsc#1240327).
    - CVE-2025-31179: improper verification of time values leads to segmentation fault on xstrftime     (bsc#1240328).
    - CVE-2025-31180: unchecked invalid pointer access leads to segmentation fault on CANVAS_text     (bsc#1240329).
    - CVE-2025-31181: double fclose() call leads to segmentation fault on X11_graphics (bsc#1240330).
    - CVE-2025-3359: out-of-bounds read when parsing font names may lead to a segmentation fault     (bsc#1241684).

Tenable has extracted the preceding description block directly from the SUSE 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	Type	Severity
333833	Photon OS 5.0: Gnuplot PHSA-2025-5.0-92-0522	Nessus	PhotonOS Local Security Checks	Local	medium
332395	Photon OS 5.0: Gnuplot PHSA-2025-5.0-91-0522	Nessus	PhotonOS Local Security Checks	Local	medium
265985	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : Gnuplot vulnerabilities (USN-7773-1)	Nessus	Ubuntu Local Security Checks	Local	medium
251076	Linux Distros Unpatched Vulnerability : CVE-2025-31177	Nessus	Misc.	Local	high
242215	SUSE SLES15 Security Update : gnuplot (SUSE-SU-2025:01811-2)	Nessus	SuSE Local Security Checks	Local	medium
237776	SUSE SLES15 / openSUSE 15 Security Update : gnuplot (SUSE-SU-2025:01811-1)	Nessus	SuSE Local Security Checks	Local	medium
237569	Photon OS 4.0: Gnuplot PHSA-2025-4.0-0806	Nessus	PhotonOS Local Security Checks	Local	medium
236797	Photon OS 5.0: Gnuplot PHSA-2025-5.0-0522	Nessus	PhotonOS Local Security Checks	Local	medium

Detections

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CVE-2025-31177

medium

Tenable Plugins

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medium