---
cve: "CVE-2019-25544"
severity: "MEDIUM"
cvss: 6.9
epss: "19%"
vendor: "Pidgin"
kev: false
exploited: false
published: "2026-03-21 13:16:15"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T04:12:20+02:00"
---

# CVE-2019-25544

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.exploit-db.com/exploits/46930>
- <https://pidgin.im/>
- <https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-25544) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_