PT-2026-22419 · Vim+3 · Vim+3

Ehdgks0627 · Published 2026-02-27 · Updated 2026-05-24 · CVE-2026-28420

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Name of the Vulnerable Software and Affected Versions Vim versions prior to 9.2.0076

Description Vim is an open source, command line text editor. 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. The issue relates to reading beyond the boundaries of a memory buffer. The :terminal component is affected.

Recommendations Versions prior to 9.2.0076 should be updated to version 9.2.0076.

Exploit

Fix

DoS

Heap Based Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-122

CWE-125

Related Identifiers

AZL-78503

BDU:2026-02588

CVE-2026-28420

ECHO-E482-E357-798E

GHSA-RVJ2-JRF9-2PHG

MGASA-2026-0049

OESA-2026-1565

SUSE-SU-2026:0910-1

SUSE-SU-2026:1051-1

SUSE-SU-2026:1095-1

USN-8101-1

Affected Products

Linuxmint

Red Os

Ubuntu

Vim

References · 72

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28420.json · Exploit
• https://github.com/vim/vim/commit/bb6de2105b160e729c34063 · Patch
• https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phg · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02588 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-28420 · Security Note
• https://ubuntu.com/security/CVE-2026-26269 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28422 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-28419 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-28418 · Security Note
• https://ubuntu.com/security/CVE-2026-28422 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2026-0049.html · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-28420 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-28420 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-28418 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-28420 · Vendor Advisory