vim up to 9.2.0075 heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in vim up to 9.2.0075. Affected by this issue is some unknown functionality. Executing a manipulation can lead to heap-based overflow. This vulnerability is registered as CVE-2026-28420. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in vim up to 9.2.0075 and classified as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.

The advisory is available at github.com. This vulnerability was named CVE-2026-28420 since 02/27/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 300511 (Linux Distros Unpatched Vulnerability : CVE-2026-28420), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.2.0076 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 (300511), EUVD (EUVD-2026-9088) and CERT Bund (WID-SEC-2026-0556). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔒

CNA Base Score: 4.4
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 300511
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-28420

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: vim 9.2.0076
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-rvj2-jrf9-2phg
Status: Confirmed

CVE: CVE-2026-28420 (🔒)
GCVE (CVE): GCVE-0-2026-28420
GCVE (VulDB): GCVE-100-348250
EUVD: 🔒
CERT Bund: WID-SEC-2026-0556 - vim: Mehrere Schwachstellen

Entryinfo

Created: 02/28/2026 03:00
Updated: 04/16/2026 23:30
Changes: 02/28/2026 03:00 (66), 02/28/2026 14:01 (1), 03/02/2026 11:38 (7), 03/03/2026 22:23 (1), 03/04/2026 22:23 (11), 03/04/2026 23:59 (2), 03/08/2026 17:22 (1), 03/19/2026 00:33 (1), 04/16/2026 23:30 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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