DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension_CVE-2025-11933

2.3 / 10

LOW

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Description

Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.

Basic Information

ID CVE-2025-11933

Source wolfSSL

Published Nov 21, 2025 at 22:19

Affected Product

Vendor wofSSL

Product wolfSSL

Version v5.8.2

Affected Versions wofSSL wolfSSL v5.8.2

CWE Classification

CWE-20

References

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    "lastseen": "",
    "description": "Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.",
    "published": "2025-11-21T22:19:08.654Z",
    "modified": "2025-11-21T22:19:08.654Z",
    "type": "cve",
    "title": "DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl\nhttps://github.com/wolfSSL/wolfssl/pull/9132",
    "id": "CVE-2025-11933",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20"
    ],
    "cvelist": null,
    "sourceData": "wofSSL wolfSSL v5.8.2",
    "sourceHref": "",
    "cvss": {
        "score": 2.3,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
        "version": "4.0"
    },
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        "privilegesRequired": "",
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        "availabilityImpact": "",
        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "wolfSSL",
    "version": "v5.8.2",
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    "ai_description": "",
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    "ai_score": 0
}