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CVE-2026-28418— Vim has Heap-based Buffer Overflow in Emacs tags parsing

Quick assessment

Affected
vim vim
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vim是Vim开源的一款跨平台的文本编辑器。 Vim 9.2.0074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越界读取，可能导致处理畸形标签文件时读取超出分配内存边界的数据。

CVSS 4.4 · Medium EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-28418

Vulnerability Information
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Vulnerability Title
Vim has Heap-based Buffer Overflow in Emacs tags parsing
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
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 9.2.0074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越界读取，可能导致处理畸形标签文件时读取超出分配内存边界的数据。
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

Vendor Product Affected Versions CPE Subscribe
vim vim < 9.2.0074 -

II. Public POCs for CVE-2026-28418

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III. Intelligence Information for CVE-2026-28418

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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-2026-28419 5.3 MEDIUM Vim has Heap-based Buffer Underflow in Emacs tags parsing
CVE-2026-28420 4.4 MEDIUM Vim has Heap-based Buffer Overflow and OOB Read in :terminal
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
Same vendor: vim
Same weakness: CWE-122

V. Comments for CVE-2026-28418

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