Red Hat Security Advisory: Red Hat Multiarch Tuning 1.3.4
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in Red Hat package updates : patch Red Hat asn1 soon.
Data as of 26 Oct 2026, 18:42 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.27.0-rc.3, 1.26.6, 1.25.13
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 13 Aug 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
Upgrade encoding/asn1 to 1.27.0-rc.3, 1.26.6 or 1.25.13.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go standard libraryencoding/asn1 | Affected
| Fixed in
|
| Go standard libraryencoding/asn1 | Affected
| Fixed in
|
| Go standard libraryencoding/asn1 | Affected
| Fixed in
|
Goencoding/asn1pkg:golang/encoding/asn1Other threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Apply the Red Hat Multiarch Tuning Operator update to version 1.3.4 or later, which includes official fixes for the described security issues. This update restricts ServiceAccount permissions to the minimum necessary scope and addresses insecure hostPath mount behavior and input validation issues. No additional mitigation actions are required beyond applying this update.
Description
Red Hat Multiarch Tuning Operator version 1.3.4 addresses multiple security issues by restricting excessive permissions previously granted to Operator and pod placement controller ServiceAccounts. The update limits Secret access, restricts MutatingWebhookConfiguration modifications to only those managed by the Operator, and confines write permissions on ClusterRoles and RoleBindings to operand resources. Additional fixes include preventing unauthorized directory creation via hostPath mounts, improving cache key collision resistance, and validating architecture strings and error messages before writing to pod metadata. These changes mitigate risks related to privilege escalation and unauthorized resource manipulation.
References
- access.redhat.com/errata/RHSA-2026:64827 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-33818 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-56853 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-56860 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-56862 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- docs.redhat.com/en/documentation/openshift_container_platform/latest/html/postinstallation_configuration/configuring-multi-architecture-compute-machines-on-an-openshift-cluster (opens in a new tab)
- github.com/openshift/openshift-docs/blob/main/post_installation_configuration/configuring-multi-arch-compute-machines/multi-arch-tuning-operator-release-notes.adoc (opens in a new tab)
- github.com/openshift/openshift-docs/blob/main/post_installation_configuration/configuring-multi-arch-compute-machines/multiarch-tuning-operator.adoc (opens in a new tab)
- github.com/outrigger-project/multiarch-tuning-operator (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_64827.json (opens in a new tab)