CVE-2026-18743

2.5 lowEPSS 0.1%

Low (2.5). EPSS 0.1% chance of exploitation in the next 30 days.

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).

Severity

CVSS 3.1

2.5 low

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE: CWE-131
Published: 2026-09-01
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

References

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

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