FreeBSD OS: Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-0376 · first 11.02.2026 · updated 10.03.2026 · CVSS 7,5
What it is about
FreeBSD ist ein Open Source Betriebssystem aus der BSD Familie und gehört damit zu den Unix Derivaten. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in FreeBSD OS ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- FreeBSD Project FreeBSD OS 15.0-STABLE
- FreeBSD Project FreeBSD OS 15.0-RELEASE-p3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- FreeBSD Security Advisory FreeBSD-SA-26:03.blocklistd vom 2026-02-10 www.freebsd.org
CVE: CVE-2026-2261
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.