CVE-2026-18839

An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.

CVSS v3 2.2 LOW

2.2^/10

CVSS v3 : LOW

Vector :

Exploitability : 0.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-18839
https://bugzilla.redhat.com/show_bug.cgi?id=2511010

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-05 21:16

Updated : 2026-09-01 13:18

NVD link : CVE-2026-18839

Mitre link : CVE-2026-18839

CVE.ORG link : CVE-2026-18839

JSON object : View

Products Affected

No product.

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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