VDB-348252 · CVE-2026-28422 · GHSA-gmqx-prf2-8mwf

vim up to 9.2.0077 build_stl_str_hl stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in vim up to 9.2.0077. This vulnerability affects the function build_stl_str_hl. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2026-28422. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in vim up to 9.2.0077. It has been classified as critical. Affected is the function build_stl_str_hl. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-28422 since 02/27/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 300194 (Linux Distros Unpatched Vulnerability : CVE-2026-28422), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.2.0078 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (300194), EUVD (EUVD-2026-9090) and CERT Bund (WID-SEC-2026-0556). Once again VulDB remains the best source for vulnerability data.

Affected

Red Hat Enterprise Linux
Fedora Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
RESF Rocky Linux
Open Source vim
Red Hat OpenShift

Productinfo

Type

Word Processing Software

Name

Version

9.2.0077

License

open-source

Website

Product: https://github.com/vim/vim/

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.5

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.2
CNA Vector (GitHub_M): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 300194
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-28422

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: vim 9.2.0078
Patch: github.com

Timelineinfo

02/27/2026 CVE reserved
02/28/2026 +1 days Advisory disclosed
02/28/2026 +0 days VulDB entry created
04/16/2026 +47 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-gmqx-prf2-8mwf
Status: Confirmed

CVE: CVE-2026-28422 (🔒)
GCVE (CVE): GCVE-0-2026-28422
GCVE (VulDB): GCVE-100-348252
EUVD: 🔒
CERT Bund: WID-SEC-2026-0556 - vim: Mehrere Schwachstellen

Entryinfo

Created: 02/28/2026 03:01
Updated: 04/16/2026 23:31
Changes: 02/28/2026 03:01 (67), 02/28/2026 14:01 (1), 03/02/2026 11:38 (7), 03/03/2026 11:17 (2), 03/03/2026 22:23 (1), 03/08/2026 21:02 (1), 03/19/2026 03:44 (1), 04/16/2026 23:31 (1)
Complete: 🔍
Cache ID: 216::103