CVE-2025-22134

heap-buffer-overflow with visual mode in Vim < 9.1.1003

Severity Score

4.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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

It was discovered that Vim incorrectly handled memory when closing buffers with the visual mode active. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

High

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-12-30 CVE Reserved
2025-01-13 CVE Published
2025-01-14 CVE Updated
2025-01-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-122: Heap-based Buffer Overflow

CAPEC

References (3)

URL	Tag	Source
https://github.com/vim/vim/commit/c9a1e257f1630a0866447e53a564f7ff96a80ead	X_refsource_misc
https://github.com/vim/vim/security/advisories/GHSA-5rgf-26wj-48v8	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2025/01/11/1

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vim Search vendor "Vim"		Vim Search vendor "Vim" for product "Vim"				< 9.1.1003 Search vendor "Vim" for product "Vim" and version " < 9.1.1003"		en		Affected