CVE-2025-22134
MediumCVSS 4.2Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
A vulnerability in Vim may lead to a heap-buffer overflow when switching to other buffers with visual mode still active. The issue arises from the improper ending of visual mode, which may result in attempts to access memory beyond the end of a line in a buffer.
Risk Assessment
The risk is medium since the user must have visual mode enabled when executing the :all command. This could lead to unexpected application behavior and potential security vulnerabilities.
Recommendation
It is recommended to update to Vim version 9.1.1003 or later to mitigate this vulnerability and ensure proper resetting of visual mode before opening other windows and buffers.
Other vulnerabilities in Vim
See all- CVE-2026-41411Medium
Vim is an open source command line text editor. Prior to 9.2.0357, a command injection vulnerability exists in Vim's tag file processing. When resolving a tag, the filename field from the tags file is passed through wildcard expansion; if it contains backtick syntax (e.g., `command`), Vim executes the embedded command via the system shell with the full privileges of the running user.
- CVE-2026-28422Low
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-2026-28421Medium
Vim versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) in the swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file.
- CVE-2026-28420Medium
Vim, an open-source command-line text editor, prior to version 9.2.0076 contains a heap-based buffer overflow write and an out-of-bounds read in its terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.
- CVE-2026-28419Medium
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.
- CVE-2026-28418Medium
Vim is vulnerable to a heap-based buffer overflow out-of-bounds read in its Emacs-style tags file parsing logic prior to version 9.2.0074. When processing a malformed tags file, Vim can read up to 7 bytes beyond the allocated memory boundary. Version 9.2.0074 fixes the issue.
- CVE-2026-28417Medium
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-2026-26269Medium
A stack buffer overflow vulnerability exists in Vim's NetBeans integration when processing the specialKeys command. A malicious NetBeans server can overflow the 64-byte keybuf with a single specialKeys command. The issue is fixed in Vim patch v9.1.2148.
- CVE-2024-22667High
Vim before 9.0.2142 has a stack-based buffer overflow because did_set_langmap in map.c calls sprintf to write to the error buffer passed down to the option callback functions.
- CVE-2017-11109High
Vim 8.0 allows attackers to cause a denial of service (invalid free) or possibly have unspecified other impact via a crafted source (aka -S) file.
Original NVD description (English source)
When switching to other buffers using the :all command and visual mode still being active, this may cause a heap-buffer overflow, because Vim does not properly end visual mode and therefore may try to access beyond the end of a line in a buffer. In Patch 9.1.1003 Vim will correctly reset the visual mode before opening other windows and buffers and therefore fix this bug. In addition it does verify that it won't try to access a position if the position is greater than the corresponding buffer line. Impact is medium since the user must have switched on visual mode when executing the :all ex command. The Vim project would like to thank github user gandalf4a for reporting this issue. The issue has been fixed as of Vim patch v9.1.1003
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

