CVE-2026-28422: Vim has stack-buffer-overflow in build_stl_str_hl()

Published Feb 27, 2026
·
Updated

Vim has stack-buffer-overflow in buildstlstrhl()

Other sources

Vim is an open source, command line text editor. Prior to version 9.2.0078, a stack-buffer-overflow occurs in buildstlstrhl() when rendering a statusline with a multi-byte fill character on a very wide terminal. Version 9.2.0078 patches the issue.

— NVD

Affected Software

10 affected componentsFixes available
vim Vim<9.2.0078
Microsoft azl3 vim 9.1.1616-1
Patch available
vim Vim<9.2.0078
Microsoft cbl2 vim 9.1.1616-1
Patch available
debian/vim<=2:9.0.1378-2+deb12u2, <=2:9.1.1230-2
2:9.1.1230-2+deb13u12:9.2.0858-1
debian/vim*
debian/vim<2:9.1.1230-2+deb13u1
2:9.1.1230-2+deb13u1
debian/vim<2:9.2.0119-1
2:9.2.0119-1
alpine/vim<9.2.0078-r0
9.2.0078-r0
alpine/vim<9.2.0078-r0
9.2.0078-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.1.1230-2+deb13u1Fixed in 2:9.2.0858-1
  2. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.1.1230-2+deb13u1
  3. Upgrade

    Upgrade debian/vim to a version that resolves this vulnerability.

    Fixed in 2:9.2.0119-1
  4. Upgrade

    Upgrade alpine/vim to a version that resolves this vulnerability.

    Fixed in 9.2.0078-r0
  5. Upgrade

    Upgrade Vim to a version that resolves this vulnerability.

    Fixed in 9.2.0078

Event History

Feb 27, 2026
CVE Published
via MITRE·10:08 PM
Data Sourced
via MITRE·10:08 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·10:16 PM
DescriptionSeverityAffected Software
Mar 1, 2026
Data Sourced
via Microsoft·09:01 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2026-28422?

CVE-2026-28422 has been classified as a high severity vulnerability due to the potential for a stack-buffer overflow.

2

How do I fix CVE-2026-28422?

To mitigate CVE-2026-28422, update Vim to version 9.2.0078 or later.

3

What version of Vim is affected by CVE-2026-28422?

Vim versions prior to 9.2.0078 are affected by CVE-2026-28422.

4

What causes the vulnerability CVE-2026-28422?

CVE-2026-28422 is caused by a stack-buffer overflow in the build_stl_str_hl() function when rendering a statusline with a multi-byte fill character.

5

Is CVE-2026-28422 a local or remote vulnerability?

CVE-2026-28422 is considered a local vulnerability, as it requires access to the system running the affected version of Vim.

Company

Resources

Contact

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