The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:51063 advisory.

    X.Org X11 libXfont2 runtime library

    Security Fix(es):

    * libXfont2: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow (CVE-2026-56001)

    * libXfont2: PCF Font Parsing Heap Buffer Overflow (CVE-2026-56002)

    * libXfont2: computeProps Property Buffer Heap Buffer Overflow (CVE-2026-56003)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1539:02 advisory.

    * libXfont2: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow (CVE-2026-56001)
      * libXfont2: PCF Font Parsing Heap Buffer Overflow (CVE-2026-56002)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A heap buffer overflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8     allows attackers authenticated as X client to execute code within the X server.(CVE-2026-56002)

    A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in     libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using     authenticated X clients to execute code within the X server.(CVE-2026-56003)

    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size     could be used by attackers able to access the X Server to execute code within the X server     cont(CVE-2026-56001)

Tenable has extracted the preceding description block directly from the EulerOS libXfont2 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 CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1787393547 advisory.

  - A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size     could be used by attackers able to access the X Server to execute code within the X server cont     (CVE-2026-56001)

  - A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows     attackers authenticated as X client to execute code within the X server. (CVE-2026-56002)

  - A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in     libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using     authenticated X clients to execute code within the X server. (CVE-2026-56003)

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

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_47103 advisory.

    * libXfont2: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow (CVE-2026-56001)

    * libXfont2: PCF Font Parsing Heap Buffer Overflow (CVE-2026-56002)

    * libXfont2: computeProps Property Buffer Heap Buffer Overflow (CVE-2026-56003)

Tenable has extracted the preceding description block directly from the CIQ 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 libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in     libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using     authenticated X clients to execute code within the X server.(CVE-2026-56003)

    A flaw was found in the libXfont2 font-server client. This heap buffer overflow vulnerability allows a     malicious font server to send specially crafted glyph data. The fs_read_glyphs() function fails to     properly validate the total size of the incoming data, leading to an overwrite of memory beyond the     intended buffer. If the X server runs as a privileged user, this could result in privilege escalation,     allowing an attacker to gain higher access. If the X server runs as an unprivileged user, it could lead to     a denial of service, causing the system to crash.(CVE-2026-44950)

    A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8  allows     attackers authenticated as X client to execute code within the X server.(CVE-2026-56002)

    A flaw was found in the libXfont2 font-server client. A remote attacker, by operating a malicious font     server, could exploit an out-of-bounds read/write vulnerability. This occurs because the client     incorrectly handles font data, leading to an out-of-bounds memory access. This can lead to privilege     escalation if the X server runs with root privileges, or a denial of service (crash) if it runs as an     unprivileged user.(CVE-2026-59679)

    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size     could be used by attackers able to access the X Server to execute code within the X server     cont(CVE-2026-56001)

Tenable has extracted the preceding description block directly from the EulerOS libXfont2 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 libXfont2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A heap buffer overflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8     allows attackers authenticated as X client to execute code within the X server.(CVE-2026-56002)

    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size     could be used by attackers able to access the X Server to execute code within the X server     cont(CVE-2026-56001)

    A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in     libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using     authenticated X clients to execute code within the X server.(CVE-2026-56003)

Tenable has extracted the preceding description block directly from the EulerOS libXfont2 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	名称	产品	系列	发布时间	最近更新时间	严重程度
333112	RHEL 7 : libXfont2 (RHSA-2026:51063)	Nessus	Red Hat Local Security Checks	2026/8/6	2026/8/6	high
335332	MiracleLinux 9 : libXfont2-2.0.3-12.el9_8.1 (AXSA:2026-1539:02)	Nessus	Miracle Linux Local Security Checks	2026/8/14	2026/8/14	high
343690	EulerOS 2.0 SP12 : libXfont2 (EulerOS-SA-2026-3272)	Nessus	Huawei Local Security Checks	2026/9/8	2026/9/8	high
353226	CentOS Linux 7 [TuxCare] Security Update: libXfont2 / libXfont2-devel Multiple Vulnerabilities (CENTOS7:CLSA-2026:1787393547)	Nessus	CentOS Local Security Checks	2026/9/30	2026/9/30	high
358722	Rocky Linux 8 [CIQ] Security Update: libXfont2 / libXfont2-debuginfo / libXfont2-debugsource / etc Multiple Vulnerabilities (crlsa-2026_47103)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	high
364796	EulerOS 2.0 SP13 : libXfont2 (EulerOS-SA-2026-4058)	Nessus	Huawei Local Security Checks	2026/10/12	2026/10/12	critical
364080	EulerOS 2.0 SP15 : libXfont2 (EulerOS-SA-2026-3917)	Nessus	Huawei Local Security Checks	2026/10/8	2026/10/15	high

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