CVE-2026-28419— Vim has Heap-based Buffer Underflow in Emacs tags parsing
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I. Basic Information for CVE-2026-28419
Vulnerability Information
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Vulnerability Title
Vim has Heap-based Buffer Underflow in Emacs tags parsing
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
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
缓冲区下溢
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 9.2.0075之前版本存在安全漏洞，该漏洞源于Emacs风格标签文件解析逻辑存在基于堆的缓冲区下溢，可能导致处理行首包含分隔符的畸形标签文件时读取分配缓冲区之前的内存。
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
II. Public POCs for CVE-2026-28419
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Same Patch Batch · vim · 2026-02-27 · 6 CVEs total
| CVE-2026-28421 | 5.3 MEDIUM | Vim has a heap-buffer-overflow and a segmentation fault |
| CVE-2026-28420 | 4.4 MEDIUM | Vim has Heap-based Buffer Overflow and OOB Read in :terminal |
| CVE-2026-28418 | 4.4 MEDIUM | Vim has Heap-based Buffer Overflow in Emacs tags parsing |
| CVE-2026-28417 | 4.4 MEDIUM | Vim has OS Command Injection in netrw |
| CVE-2026-28422 | 2.2 LOW | Vim has stack-buffer-overflow in build_stl_str_hl() |
IV. Related Vulnerabilities
Same product: vim
- CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading - CVE-2026-44656
Vim: OS Command Injection via 'path' completion - CVE-2026-42307
Vim: OS Command Injection in netrw - CVE-2026-41411
Vim: Command injection via backtick expansion in tag filenam - CVE-2026-39881
Vim Ex command injection in Vims NetBeans integration
Same vendor: vim
- CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading - CVE-2026-44656
Vim: OS Command Injection via 'path' completion - CVE-2026-42307
Vim: OS Command Injection in netrw - CVE-2026-41411
Vim: Command injection via backtick expansion in tag filenam - CVE-2026-39881
Vim Ex command injection in Vims NetBeans integration
V. Comments for CVE-2026-28419
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