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CVE-2026-33186VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat OpenShift Builds 1.6.5

Affects Red HatSource GCVE Database

0
Authoritative record:CVE-2026-33186· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical : upgrade Red Hat grpc-go to 1.79.3 as a priority.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.5% chance of exploitation in 30 days – higher than 75% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.79.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Mar 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 grpc-go and github.com/grpc/grpc-go to 1.79.3.

Affected software

ProductAffectedFixed in
grpcgrpc-goAffected
  • <1.79.3
Fixed in
  • 1.79.3
Gogithub.com/grpc/grpc-gopkg:golang/github.com/grpc/grpc-goOther threatsAffected
  • <1.79.3
Fixed in
  • 1.79.3

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

Description

Releases of Red Hat OpenShift Builds 1.6.5

References

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