CVE-2026-88265: Red Hat Hardened Images · Link Following
Affects Red Hat Hardened ImagesSource CVE Database V5
Not known to be exploited · CVSS 5.6 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-09-10.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Hardened Imagescrun-main | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10crun | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8container-tools:rhel8/crun | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9crun | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4crun | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8 | Affected– | Fixed in– |
AI-suggested
Red Hat states that available mitigation options do not meet their criteria for ease of use, applicability, or stability. Users should ensure default configurations that mount a fresh /dev inside containers are used, as these are not exposed to the vulnerability. Monitor Red Hat advisories for updates and apply patches once they become available.
Description
CVE-2026-88265 is a vulnerability in crun versions 1.29.1 and earlier used in Red Hat Hardened Images. The flaw allows a non-root container process to follow a symlink after pivot_root when reopening /dev/null for stdio, potentially attaching a host file to container stdio and changing its ownership. This issue requires specific conditions, such as a malicious container image replacing /dev/null with a symlink and the absence of a mounted /dev inside the container. Default configurations that mount a fresh /dev are not affected. No fixed release is available yet.