What’s Vulnerable › Vulnerabilities

CVE-2025-22134: heap-buffer-overflow with visual mode in Vim < 9.1.1003

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-01-13 · updated 2026-06-17
• Weakness: CWE-122

Description

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

Affected products

• Neovim: through 0.10.4
• NetApp Bootstrap Os: all versions
• vim/vim: through 9.1.1003

References

• https://github.com/vim/vim/commit/c9a1e257f1630a0866447e53a564f7ff96a80ead
• https://github.com/vim/vim/security/advisories/GHSA-5rgf-26wj-48v8
• http://www.openwall.com/lists/oss-security/2025/01/11/1
• https://security.netapp.com/advisory/ntap-20250314-0004/

Get alerted when CVE-2025-22134 or the next vulnerability affects your stack