Cisco SD-WAN Manager: Schwachstelle ermöglicht Manipulation von Dateien
WID-SEC-2026-1928 · first 16.06.2026 · updated 16.06.2026 · CVSS 6,5
What it is about
Cisco SD-WAN ist ein Software-definierter Ansatz für die Verwaltung von Wide Area Networks. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Cisco SD-WAN ausnutzen, um Dateien zu manipulieren, wodurch er möglicherweise Root-Rechte erlangen kann.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- Dateien zu manipulieren
- wodurch er möglicherweise Root-Rechte erlangen kann
Am I affected?
Affected according to the BSI:
- Cisco SD-WAN <20.9.9.2
- Cisco SD-WAN <20.12.7.2
- Cisco SD-WAN <20.15.4.5
- Cisco SD-WAN <20.15.5.3
- Cisco SD-WAN <20.18.3.1
- Cisco SD-WAN <26.1.1.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Cisco SD-WAN 20.9.9.2
- Cisco SD-WAN 20.12.7.2
- Cisco SD-WAN 20.15.4.5
- Cisco SD-WAN 20.15.5.3
- Cisco SD-WAN 20.18.3.1
- Cisco SD-WAN 26.1.1.2
Is the vulnerability already being exploited?
- CVE-2026-20262: exploited in the wild according to CISA, in the catalogue since 15.06.2026.
Information and sources
- Original BSI advisory (WID)
- Cisco Security Advisory cisco-sa-sdwan-arbfw-c2rZvQ vom 2026-06-15 sec.cloudapps.cisco.com
- GitHub Security Advisory GHSA-p45r-gcc9-fr7f vom 2026-06-15 github.com
CVE: CVE-2026-20262
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.