AUGUST 4, 2026
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Case File

CVE-2026-18739

LOW · CVSS 2.5 EPSS 0.10%

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-04

CyberRota Analysis

AI-Generated

A vulnerability exists in the popt command-line option parsing library due to an off-by-one error in the poptStuffArgs function, which can lead to internal data corruption when invoked multiple times or through deep alias nesting. This flaw could allow a local attacker to execute arbitrary code if the affected host application processes the corrupted data without proper safeguards. Developers and system administrators utilizing the popt library should prioritize addressing this issue to mitigate potential security risks.

CVE
CVE-2026-18739
Severity
LOW
CVSS
2.5
EPSS
0.10%

Original NVD Description

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.