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Vulnerabilities

Vulnerability · CVE-2026-25749

vim: Vim: Arbitrary code execution via 'helpfile' option processing

Published Oct 16, 2026 · Red Hat

Check if you run it

No confirmed exploitation is on record for CVE-2026-25749. EPSS is 0.22%. Act only if a listed version of Red Hat is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.22%
Remediation
Advisory link
Affected products
Red Hat

A flaw was found in Vim, an open source, command line text editor. This heap buffer overflow vulnerability exists in the tag file resolution logic when processing the 'helpfile' option. A local user could exploit this by providing a specially crafted 'helpfile' option value, leading to a heap buffer overflow. This could result in arbitrary code execution or a denial of service.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-25749

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-25749. EPSS is 0.22%. Act only if a listed version of Red Hat is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · CSAF Advisories

    Detected

    A flaw was found in Vim, an open source, command line text editor. This heap buffer overflow vulnerability exists in the tag file resolution logic when processing the 'helpfile' option. A local user could exploit this by providing a specially crafted 'helpfile' option value, leading to a heap buffer overflow. This could result in arbitrary code execution or a denial of service.

Sources

  • CSAF AdvisoriesVendor advisoryRHSA-2026:9832:CVE-2026-25749

    A flaw was found in Vim, an open source, command line text editor. This heap buffer overflow vulnerability exists in the tag file resolution logic when processing the 'helpfile' option. A local user could exploit this by providing a specially crafted 'helpfile' option value, lead

    security.access.redhat.com
  • CVE.orgVulnerability recordCVE-2026-25749

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25749

    30-day exploitation probability 0.2%

    first.org

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.