---
cve: "CVE-2026-59842"
severity: "LOW"
cvss: 3.7
epss: "42%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-07-21 12:18:57"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T03:46:38+02:00"
---

# CVE-2026-59842

> 3.7 LOW

## Beschreibung

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:42922>
- <https://access.redhat.com/errata/RHSA-2026:55855>
- <https://access.redhat.com/security/cve/CVE-2026-59842>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2498168>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59842) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_