CVE-2025-66220

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Source
https://cve.org/CVERecord?id=CVE-2025-66220
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66220.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-66220
Aliases
Published
2025-12-03T18:31:50Z
Modified
2026-08-12T03:51:30Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
Envoy’s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-170"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66220.json"
}
References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type
GIT
Repo
https://github.com/envoyproxy/envoy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b2670bbebda00060fc96f3cf9f0d6d2945e26ccf
Introduced
d7809ba2b07fd869d49bfb122b27f6a7977b4d94
Fixed
35e736f3dba538646bff402975604cfd3fe4a700
Introduced
84305a6cb64bd55aaf606bdd53de7cd6080427a1
Fixed
607aaa985080750ae29ac9f6e49a31a5445d28f4
Introduced
63ee0dc79dce88117c6bd2df5a742f8eb67ea980
Fixed
ddabe691e1aaa74b848d0782dab9dbea3b280319
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.33.13"
        },
        {
            "introduced": "1.34.0"
        },
        {
            "fixed": "1.34.11"
        },
        {
            "introduced": "1.35.0"
        },
        {
            "fixed": "1.35.7"
        },
        {
            "introduced": "1.36.0"
        },
        {
            "fixed": "1.36.3"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.18.0
v1.18.1
v1.18.2
v1.19.0
v1.2.0
v1.20.0
v1.21.0
v1.22.0
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.28.0
v1.29.0
v1.3.0
v1.30.0
v1.31.0
v1.32.0
v1.33.0
v1.33.1
v1.33.10
v1.33.11
v1.33.12
v1.33.2
v1.33.3
v1.33.4
v1.33.5
v1.33.6
v1.33.7
v1.33.8
v1.33.9
v1.34.0
v1.34.1
v1.34.10
v1.34.2
v1.34.3
v1.34.4
v1.34.5
v1.34.6
v1.34.7
v1.34.8
v1.34.9
v1.35.0
v1.35.1
v1.35.2
v1.35.3
v1.35.4
v1.35.5
v1.35.6
v1.36.0
v1.36.1
v1.36.2
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66220.json"