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CVE-2025-66220

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dfffe125867a629b3fb575e4ac9e5a920c4a6e331a50e5425b971e16ec4fb050
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"envoy","vendor":"envoyproxy","versions":[{"status":"affected","version":">= 1.36.0, <= 1.36.2"},{"status":"affected","version":">= 1.35.0, <= 1.35.6"},{"status":"affected","version":">= 1.34.0, <= 1.34.10"},{"status":"affected","version":"<= 1.33.12"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:224091cd55e05583162eef7908592e2f98a76bab909b2a3fb5947af5bd97dd1b · sha256:d81f37cfa13ffb37… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:224091cd55e05583162eef7908592e2f98a76bab909b2a3fb5947af5bd97dd1b · sha256:d81f37cfa13ffb37… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-170","description":"CWE-170: Improper Null Termination","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:224091cd55e05583162eef7908592e2f98a76bab909b2a3fb5947af5bd97dd1b · sha256:d81f37cfa13ffb37… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:224091cd55e05583162eef7908592e2f98a76bab909b2a3fb5947af5bd97dd1b · sha256:d81f37cfa13ffb37… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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