Improper Null Termination The advisory has been revoked - it doesn't affect any version of package openshift-service-mesh/istio-rhel8-operator (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-OPENSHIFTSERVICEMESHISTIORHEL8OPERATOR-14521109
- published19 Dec 2025
- disclosed3 Dec 2025
Introduced: 3 Dec 2025
CVE-2025-66220 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openshift-service-mesh/istio-rhel8-operator package and not the openshift-service-mesh/istio-rhel8-operator package as distributed by RHEL.
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.