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CVE-2026-33818VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Multiarch Tuning 1.3.4

Affects Red HatSource GCVE Database

0
Authoritative record:CVE-2026-33818· High 7.5

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

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
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:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Go standard libraryencoding/asn1Affected
  • >=1.27.0-0 <1.27.0-rc.3
Fixed in
  • 1.27.0-rc.3
Go standard libraryencoding/asn1Affected
  • >=1.26.0-0 <1.26.6
Fixed in
  • 1.26.6
Go standard libraryencoding/asn1Affected
  • <1.25.13
Fixed in
  • 1.25.13
Goencoding/asn1pkg:golang/encoding/asn1Other threatsAffected
  • <1.25.13
  • >=1.26.0-0 <1.26.6
  • >=1.27.0-0 <1.27.0-rc.3
Fixed in
  • 1.25.13
  • 1.26.6
  • 1.27.0-rc.3

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

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