CVE-2026-18739

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, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

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-787
Published: 2026-08-04
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

References

https://access.redhat.com/errata/RHSA-2026:56984
https://access.redhat.com/security/cve/CVE-2026-18739
https://bugzilla.redhat.com/show_bug.cgi?id=2510737

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