Skip to main content
CVE-2026-63374VulnerabilityPublished Updated

Red Hat Security Advisory: satellite/iop-vulnerability-engine-rhel9 container image available as a Technology Preview

Affects Red HatSource GCVE Database

0
Compare
Authoritative record:CVE-2026-63374· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical : upgrade Red Hat to 4.14.2 as a priority.

Data as of 13 Nov 2026, 15:04 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 4.14.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 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 13 Nov 2026.

What to do

Upgrade anyio to 4.14.2.

Affected software

ProductAffectedFixed in
agronholmanyioAffected
  • <4.14.2
Fixed in
  • 4.14.2

AI-suggested

Red Hat advises users to consult the Red Hat Satellite documentation for installation and configuration guidance of Red Hat Lightspeed in Satellite. Since exploitation requires interception of network traffic and use of internationalized domain names with non-ASCII characters, limiting exposure to such conditions can reduce risk.

Description

A vulnerability in the AnyIO framework used by Red Hat Lightspeed in Satellite allows a remote attacker positioned in a privileged network location to bypass TLS certificate validation for internationalized domain names (IDNs). This occurs because the framework uses an outdated IDNA 2003 standard instead of the current IDNA 2008, enabling attackers to present legitimate certificates for mismatched domain names and impersonate servers. Exploitation requires interception or redirection of network traffic and only affects connections to IDNs with non-ASCII characters. The vulnerability does not allow remote code execution and has a moderate severity rating.

References

Community reviews

Loading reviews…