Red Hat Security Advisory: Red Hat build of MicroShift 4.22.20 security update
Affects Red HatSource GCVE Database
Not known to be exploited : upgrade Red Hat x509 to 1.27.3 or 1.26.10 when convenient.
Data as of 29 Oct 2026, 08:25 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.27.3, 1.26.10
Exploitation evidence
Disclosed: evidence found.
CVE published 21 Oct 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 29 Oct 2026.
What to do
Upgrade crypto/x509 to 1.27.3 or 1.26.10.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go standard librarycrypto/x509 | Affected
| Fixed in
|
| Go standard librarycrypto/x509 | Affected
| Fixed in
|
Gocrypto/x509pkg:golang/crypto/x509Other 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
Users of Red Hat build of MicroShift 4.22 should apply the updated RPM packages and container images provided in the advisory once available in the RPM repository. Detailed installation instructions are available in the Red Hat documentation for MicroShift 4.22. Applying these updates fully remediates the vulnerability.
Description
A security update for Red Hat build of MicroShift 4.22.20 addresses a vulnerability in the golang crypto/x509 package that could allow man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943). MicroShift is a lightweight Kubernetes orchestration solution for edge device deployments. Users of MicroShift 4.22 are advised to apply the updated RPM packages and container images to mitigate this issue.