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CVE-2026-28421— Vim has a heap-buffer-overflow and a segmentation fault

CVSS 5.3 · Medium EPSS 0.01% · P2
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I. Basic Information for CVE-2026-28421

Vulnerability Information
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Vulnerability Title
Vim has a heap-buffer-overflow and a segmentation fault
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vim 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vim是Vim开源的一款跨平台的文本编辑器。 Vim 9.2.0077之前版本存在安全漏洞，该漏洞源于交换文件恢复逻辑存在基于堆的缓冲区溢出和分段违规，均由从特制交换文件指针块中读取未验证字段引起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
vimvim < 9.2.0077 -

II. Public POCs for CVE-2026-28421

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III. Intelligence Information for CVE-2026-28421

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Same Patch Batch · vim · 2026-02-27 · 6 CVEs total

CVE-2026-284195.3 MEDIUMVim has Heap-based Buffer Underflow in Emacs tags parsing
CVE-2026-284204.4 MEDIUMVim has Heap-based Buffer Overflow and OOB Read in :terminal
CVE-2026-284184.4 MEDIUMVim has Heap-based Buffer Overflow in Emacs tags parsing
CVE-2026-284174.4 MEDIUMVim has OS Command Injection in netrw
CVE-2026-284222.2 LOWVim has stack-buffer-overflow in build_stl_str_hl()

IV. Related Vulnerabilities

Same product: vim
Same vendor: vim
Same weakness: CWE-20

V. Comments for CVE-2026-28421

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