Is CVE-2026-31979 actively exploited?

No active exploitation of CVE-2026-31979 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31979 be exploited remotely?

No. CVE-2026-31979 requires local access to exploit.

What is the CVSS score of CVE-2026-31979?

CVE-2026-31979 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2026-31979

HIGH

CVE-2026-31979

CWE-59Published: March 11, 2026· Updated: Mar 16, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official Description

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Prior to 3.1.0 and 2.3.8, the himmelblaud-tasks daemon, running as root, writes Kerberos cache files under /tmp/krb5cc_<uid> without symlink protections. Since commit 87a51ee, PrivateTmp is explicitly removed from the tasks daemon's systemd hardening, exposing it to the host /tmp. A local user can exploit this via symlink attacks to chown or overwrite arbitrary files, achieving local privilege escalation. This vulnerability is fixed in 3.1.0 and 2.3.8.

NVD Source

Technical Analysis

CVE-2026-31979 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.