---
cve: "CVE-2021-28905"
severity: "LOW"
cvss: 3.1
epss: "1.4%"
vendor: "n/a"
kev: false
exploited: false
published: "2021-05-20 18:36:35"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T00:00:54+02:00"
---

# CVE-2021-28905

> 3.1 LOW · 🧪 PoC

## Beschreibung

In function lys_node_free() in libyang module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).

## Schwachstellen-Klasse

- **CWE-617** — Reachable Assertion
  The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

## Referenzen

- <https://github.com/CESNET/libyang/issues/1452>
- <https://security.gentoo.org/glsa/202107-54>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-28905) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_