---
cve: "CVE-2026-115327"
severity: "MEDIUM"
cvss: 6.0
epss: "0.3%"
vendor: "CESNET"
kev: false
exploited: false
published: "2026-10-22 10:57:45"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-31T15:40:39+01:00"
---

# CVE-2026-115327

> 6.0 MEDIUM · 🧪 PoC

## Beschreibung

libyang through 6.4.13 contains an uninitialized pointer free vulnerability in lydxml_env_netconf_rpc() in src/parser_xml.c when parsing NETCONF rpc action envelopes. Peers with a NETCONF session can send an action element containing non-whitespace text via lyd_parse_op() to crash servers like netopeer2 or corrupt the heap.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-29 02:10:37
- CNA-CVSS: **6.0** (`CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Schwachstellen-Klasse

- **CWE-824** — Access of Uninitialized Pointer
  The product accesses or uses a pointer that has not been initialized.

## Patch verfügbar (OSV)

- 927fce908774289a7d9c07fff5704c33965c9773 (Commit)

## Referenzen

- <https://github.com/CESNET/libyang/issues/2595>
- <https://github.com/CESNET/libyang/commit/927fce908774289a7d9c07fff5704c33965c9773>
- <https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1330-L1342>
- <https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1196-L1224>
- <https://hackmd.io/@haindpwn/libyang-netconf-rpc-envelope-uninit-free>
- <https://github.com/CESNET/libyang>
- <https://www.vulncheck.com/advisories/libyang-through-6.4.13-uninitialized-pointer-free-in-netconf-rpc-parser>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-115327/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_