---
cve: "CVE-2026-18739"
severity: "LOW"
cvss: 2.5
epss: "0.1%"
vendor: "rpm-software-management"
kev: false
exploited: false
published: "2026-08-04 05:32:50"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T12:56:28+02:00"
---

# CVE-2026-18739

> 2.5 LOW

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Gering | warn |

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18739) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_