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CVE-2026-111943VulnerabilityPublished Updated

Red Hat Security Advisory: ignition security update

Affects Red Hat ignitionSource GCVE Database

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Authoritative record:CVE-2026-111943· Medium

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, 08:14 UTC

Severity
Medium

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

  1. Disclosed: evidence found.

    CVE published 21 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Upgrade crypto/x509 to 1.27.3 or 1.26.10.

Affected software

ProductAffectedFixed in
Go standard librarycrypto/x509Affected
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.27.3
Go standard librarycrypto/x509Affected
  • <1.26.10
Fixed in
  • 1.26.10
Gocrypto/x509pkg:golang/crypto/x509Other threatsAffected
  • <1.26.10
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.26.10
  • 1.27.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated ignition packages that fix this vulnerability. Users should apply the security update for ignition version 2.17.0-2.el9_4.3 or later as provided in Red Hat Enterprise Linux 9.4 and related product variants. Detailed update instructions are available in the Red Hat advisory and knowledge base article https://access.redhat.com/articles/11258. No additional mitigations are indicated beyond applying the official patch.

Description

A security update for the Ignition utility in Red Hat Enterprise Linux addresses a vulnerability in the golang crypto/x509 package that could allow man-in-the-middle attacks via untrusted intermediate certificates. Ignition is responsible for system configuration during the initramfs phase, including disk partitioning and user setup. The vulnerability could impact the integrity of the configuration process on first boot. Red Hat has released patches for multiple architectures and product variants in version 9.4. The update is rated as important by Red Hat Product Security.

References

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