---
cve: "CVE-2026-10684"
severity: "LOW"
cvss: 3.0
epss: "10%"
vendor: "zephyrproject"
kev: false
exploited: false
published: "2026-07-29 19:16:43"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T07:39:17+02:00"
---

# CVE-2026-10684

> 3.0 LOW · 🧪 PoC

## Beschreibung

In subsys/debug/coredump/coredump_shell.c, print_coredump_hdr() used the 16-bit tgt_code field of a stored Zephyr coredump header directly as an index into coredump_target_code2str[], a fixed 7-element array of string pointers, with no bounds check.

A stored coredump whose tgt_code is >= 7 causes an out-of-bounds read of a char* up to ~64K entries past the array; that value is passed as the %s argument to shell_print, which dereferences and walks it as a string. The result is either disclosure of device memory contents to the shell user or a crash when the out-of-bounds pointer is unmapped.

The defect is reached via the coredump print shell command (cmd_coredump_print_stored_dump -> pretty_print_coredump -> parse_and_print_coredump -> print_coredump_hdr). The tgt_code field is device-generated and in-range during normal crash handling, so triggering requires local shell access plus the ability to stage or corrupt the stored coredump in the flash/in-memory backend.

Introduced in v4.2.0 (commit 13abd7fe730) and present through v4.4.0; fixed by clamping out-of-range codes to the 'unknown' (index 0) entry.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 75f67d766726351b30199f9a2bf55803d717a3be (Commit)
- dccb09599635bdff17633fa7e9dab014b91dce90 (Commit)

## Referenzen

- <https://github.com/zephyrproject-rtos/zephyr/commit/a9226324e8bd1f8adecafb1b6e0603f781dc750c>
- <https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9fw2-4429-49q8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-10684) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_