---
cve: "CVE-2026-62948"
severity: "CRITICAL"
cvss: 9.6
epss: "36%"
vendor: "OpenWRT"
kev: false
exploited: false
published: "2026-07-15 18:16:50"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T21:13:22+02:00"
---

# CVE-2026-62948

> 9.6 CRITICAL · 🧪 PoC

## Beschreibung

OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- f0a60eee2fe051741c643ea6118718aae1ef17fb (Commit)

## Referenzen

- <https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f>
- <https://github.com/openwrt/odhcpd/pull/404>
- <https://github.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048a>
- <https://github.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3a>
- <https://github.com/openwrt/openwrt/releases/tag/v25.12.5>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-62948) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_