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Vulnerabilities

Vulnerability · CVE-2026-6843

A flaw was found in nano.

Published Apr 22, 2026 · catalog updated Sep 1, 2026 · A flaw was found

Check if you run it

No confirmed exploitation is on record for CVE-2026-6843. EPSS is 0.15%. Act only if a listed version of A flaw was found is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A flaw was found).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Advisory link
Affected products
cpe gnu/nano · cpe redhat/enterprise linux · cpe redhat/openshift container platform

A flaw was found in nano. A local user could exploit a format string vulnerability in the function. By creating a directory with a name containing specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the application.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe gnu/nano8.7
  • cpe redhat/enterprise linux10.0
  • cpe redhat/enterprise linux6.0
  • cpe redhat/enterprise linux7.0
  • cpe redhat/enterprise linux8.0
  • cpe redhat/enterprise linux9.0
  • cpe redhat/openshift container platform4.0

How to fix CVE-2026-6843

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-2026-6843. EPSS is 0.15%. Act only if a listed version of A flaw was found is installed.

Which versions are affected?

Compare what you have installed with redhat/enterprise linux 10.0; redhat/enterprise linux 6.0; redhat/enterprise linux 7.0; redhat/enterprise linux 8.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-134: Format String Vulnerability. EPSS 0.15%. 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. Apr 22, 2026 · NIST NVD

    Detected

    A flaw was found in nano. A local user could exploit a format string vulnerability in the function. By creating a directory with a name containing specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the application.

  2. Sep 1, 2026 · NIST NVD

    Updated

    A flaw was found in nano. A local user could exploit a format string vulnerability in the function. By creating a directory with a name containing specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the application.

Sources

  • CVE.orgVulnerability recordCVE-2026-6843

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-6843

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-6843

    A flaw was found in nano. A local user could exploit a format string vulnerability in the function. By creating a directory with a name containing specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This resul

    nvd.nist.gov

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.