---
cve: "CVE-2025-68973"
severity: "HIGH"
cvss: 7.8
epss: "14%"
vendor: "GnuPG"
kev: false
exploited: false
published: "2025-12-28 17:16:01"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T22:36:02+02:00"
---

# CVE-2025-68973

> 7.8 HIGH · 🧪 PoC

## Beschreibung

In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 115d138ba599328005c5321c0ef9f00355838ca9 (Commit)

## Referenzen

- <https://gpg.fail/memcpy>
- <https://news.ycombinator.com/item?id=46403200>
- <https://www.openwall.com/lists/oss-security/2025/12/28/5>
- <https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9>
- <https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306>
- <https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51>
- <https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i>
- <http://www.openwall.com/lists/oss-security/2025/12/29/11>
- <https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-68973) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_