CVE-2026-18743

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful exploitation could result in heap metadata corruption, potentially causing the affected process to become unavailable (denial of service).

CVSS v3 2.5 LOW

2.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:56984
https://access.redhat.com/security/cve/CVE-2026-18743
https://bugzilla.redhat.com/show_bug.cgi?id=2510809

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 02:16

Updated : 2026-09-08 23:17

NVD link : CVE-2026-18743

Mitre link : CVE-2026-18743

CVE.ORG link : CVE-2026-18743

JSON object : View

Products Affected

No product.

CWE

CWE-131

Incorrect Calculation of Buffer Size

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