---
cve: "CVE-2026-24881"
severity: "HIGH"
cvss: 8.1
epss: "1.7%"
vendor: "GnuPG"
kev: false
exploited: false
published: "2026-01-27 19:16:16"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T01:58:55+02:00"
---

# CVE-2026-24881

> 8.1 HIGH

## Beschreibung

In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 83608d53f6e58de1c593b49d168ac30aa53a4cd6 (Commit)

## Referenzen

- <https://www.openwall.com/lists/oss-security/2026/01/27/8>
- <https://dev.gnupg.org/T8044>
- <https://access.redhat.com/security/cve/CVE-2026-24881>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2433480>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24881.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-24881) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_