---
cve: "CVE-2026-18839"
severity: "LOW"
cvss: 2.2
epss: "0.1%"
vendor: "rpm-software-management"
kev: false
exploited: false
published: "2026-08-05 21:16:57"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T16:17:31+02:00"
---

# CVE-2026-18839

> 2.2 LOW

## Beschreibung

An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/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 | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Gering | warn |

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-18839>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2511010>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18839) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_