CVE-2026-123177: Red Hat Hardened Images · Missing Authorization
Affects Red Hat Hardened ImagesSource CVE Database V5
Not known to be exploited · CVSS 8.4 High.
Data as of 13 Nov 2026, 17:49 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 8.4 |
|---|
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Hardened Imagesdnf5 | Affected– | Fixed in– |
AI-suggested
Red Hat currently has no fixed package available for this vulnerability. Until a fix is released, users should remove or disable dnf5daemon-server if GNOME Software or dnf5daemon-client is not required. Alternatively, restrict system D-Bus access to org.rpm.dnf.v0 to trusted users only. On cloud hosts, ensure that non-root access to instance metadata is blocked and the daemon cannot be used as a bypass, or disable the daemon entirely. If exploitation cannot be ruled out, rotate exposed secrets such as SSH host keys, service credentials, and cloud role credentials, and clear the /var/cache/dnf5daemon-server directory.
Description
CVE-2026-123177 is a vulnerability in the dnf5daemon-server component used in Red Hat Hardened Images. It allows unauthenticated local attackers to invoke D-Bus methods that pass attacker-controlled URLs or RPM path patterns to a root-privileged package loader. This can lead to disclosure of privileged content via a world-readable cache and denial of service through disk exhaustion. Red Hat Enterprise Linux itself is not affected as it does not ship dnf5daemon-server. Mitigations include disabling or removing dnf5daemon-server if not needed, restricting D-Bus access, and rotating exposed secrets if exploitation is suspected.