Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.

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-2026:0178 advisory.

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

    CVE-2026-28422:
    Vim is an open source, command line text editor. Prior to version 9.2.0078, a stack-buffer-overflow occurs     in `build_stl_str_hl()` when rendering a statusline with a multi-byte fill character on a very wide     terminal. Version 9.2.0078 patches the issue.

    CVE-2026-28421:
    Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow     and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated     fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.

    CVE-2026-28420:
    Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow     WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining     characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.

    CVE-2026-28419:
    Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow     exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a     delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated     buffer. Version 9.2.0075 fixes the issue.

    CVE-2026-28418:
    Vim is an open source, command line text editor. Prior to version 9.2.0074, a heap-based buffer overflow     out-of-bounds read exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags     file, Vim can be tricked into reading up to 7 bytes beyond the allocated memory boundary. Version 9.2.0074     fixes the issue.

    CVE-2026-28417:
    Vim is an open source, command line text editor. Prior to version 9.2.0073, an OS command injection     vulnerability exists in the `netrw` standard plugin bundled with Vim. By inducing a user to open a crafted     URL (e.g., using the `scp://` protocol handler), an attacker can execute arbitrary shell commands with the     privileges of the Vim process. Version 9.2.0073 fixes the issue.

    CVE-2026-26269:
    Vim is an open source, command line text editor. Prior to 9.1.2148, a stack buffer overflow vulnerability     exists in Vim's NetBeans integration when processing the specialKeys command, affecting Vim builds that     enable and use the NetBeans feature. The Stack buffer overflow exists in special_keys() (in     src/netbeans.c). The while (*tok) loop writes two bytes per iteration into a 64-byte stack buffer (keybuf)     with no bounds check. A malicious NetBeans server can overflow keybuf with a single specialKeys command.
    The issue has been fixed as of Vim patch v9.1.2148.

    CVE-2026-25749:
    Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow     vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The     vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim     copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes     (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been     patched in version 9.1.2132.

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.

An update of the vim package has been released.

The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the vim-8.2.2637-26.el9 build changelog.

  - Denial of service and information disclosure via crafted swap file (CVE-2026-28421)

  - Arbitrary code execution via OS command injection in the netrw plugin (CVE-2026-28417)

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

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-f5d072060b advisory.

    patchlevel 148

    ----

    Security fixes for CVE-2026-28417, CVE-2026-28418, CVE-2026-28419, CVE-2026-28420, CVE-2026-28421,     CVE-2026-28422

    ---

    Security fix for CVE-2026-32249

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 14.04 LTS / 16.04 LTS / 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-8101-1 advisory.

    Rahul Hoysala discovered that Vim did not correctly handle certain tag resolutions. An attacker could     possibly use this issue to cause a denial of service. (CVE-2026-25749)

    It was discovered that Vim did not correctly handle processing certain specialKey commands. An attacker     could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-26269)

    Kim Dong Han discovered that Vim did not correctly handle opening certain URLs. If a user or system were     tricked into opening a specially crafted file, an attacker could possibly use this issue to execute     arbitrary code. (CVE-2026-28417)

    Kim Dong Han discovered that Vim did not correctly handle parsing Emacs-style tag files. An attacker could     possibly use this issue to cause a denial of service. (CVE-2026-28418, CVE-2026-28419)

    Kim Dong Han discovered that Vim did not correctly handle processing maximum combining characters from     Unicode supplementary planes. An attacker could possibly use this issue to cause a denial of service or     execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,     Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-28420)

    Kim Dong Han discovered that Vim did not correctly handle swap file recovery. An attacker could possibly     use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-28421)

    Kim Dong Han discovered that Vim did not correctly handle rendering status lines. An attacker could     possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-28422)

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 remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1885157e34 advisory.

    patchlevel 148

    ----

    Security fixes for CVE-2026-28417, CVE-2026-28418, CVE-2026-28419, CVE-2026-28420, CVE-2026-28421,     CVE-2026-28422

    ----

    Security fix for CVE-2026-32249


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 version of Vim installed on the remote host is prior to 9.2.0077. It is, therefore, affected by a vulnerability as referenced in the GHSA-r2gw-2x48-jj5p advisory.

  - Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow     and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated     fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.     (CVE-2026-28421)

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

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-651ba4626f advisory.

    Security fixes for CVE-2026-28417, CVE-2026-28418, CVE-2026-28419, CVE-2026-28420, CVE-2026-28421,     CVE-2026-28422

    ----

    Security fixes for CVE-2026-28417, CVE-2026-28418, CVE-2026-28419, CVE-2026-28420, CVE-2026-28421,     CVE-2026-28422

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

  - Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow     and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated     fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.
    (CVE-2026-28421)

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

ID	Name	Product	Family	Severity
303491	TencentOS Server 4: vim (TSSA-2026:0178)	Nessus	Tencent Local Security Checks	high
303400	Photon OS 4.0: Vim PHSA-2026-4.0-0979	Nessus	PhotonOS Local Security Checks	high
303360	CentOS 9 : vim-8.2.2637-26.el9	Nessus	CentOS Local Security Checks	high
303122	Fedora 44 : vim (2026-f5d072060b)	Nessus	Fedora Local Security Checks	high
303027	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Vim vulnerabilities (USN-8101-1)	Nessus	Ubuntu Local Security Checks	high
302988	Fedora 42 : vim (2026-1885157e34)	Nessus	Fedora Local Security Checks	high
302752	Photon OS 5.0: Vim PHSA-2026-5.0-0785	Nessus	PhotonOS Local Security Checks	high
301510	Vim < 9.2.0077 Heap-based Buffer Overflow (GHSA-r2gw-2x48-jj5p)	Nessus	Misc.	high
301469	Fedora 43 : vim (2026-651ba4626f)	Nessus	Fedora Local Security Checks	high
300519	Linux Distros Unpatched Vulnerability : CVE-2026-28421	Nessus	Misc.	high

Detections

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CVE-2026-28421

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