wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse_CVE-2026-5446

6 / 10

MEDIUM

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

Description

In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wc_AriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is zero-initialized at session setup and never incremented in non-FIPS builds. This vulnerability affects wolfSSL builds configured with --enable-aria and the proprietary MagicCrypto SDK (a non-default, opt-in configuration required for Korean regulatory deployments). AES-GCM is not affected because wc_AesGcmEncrypt_ex maintains an internal invocation counter independently of the call-site guard.

Basic Information

ID CVE-2026-5446

Source wolfSSL

Published Apr 9, 2026 at 21:02

Modified Apr 10, 2026 at 18:11

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 5.2.1

Affected Versions wolfSSL wolfSSL 5.2.1

CWE Classification

CWE-323

References

github.com /wolfSSL/wolfssl/pull/10111

{
    "lastseen": "",
    "description": "In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wc_AriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is zero-initialized at session setup and never incremented in non-FIPS builds. This vulnerability affects wolfSSL builds configured with --enable-aria and the proprietary MagicCrypto SDK (a non-default, opt-in configuration required for Korean regulatory deployments). AES-GCM is not affected because wc_AesGcmEncrypt_ex maintains an internal invocation counter independently of the call-site guard.",
    "published": "2026-04-09T21:02:27.201Z",
    "modified": "2026-04-10T18:11:52.759Z",
    "type": "cve",
    "title": "wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl/pull/10111",
    "id": "CVE-2026-5446",
    "bulletinFamily": "",
    "cwe": [
        "CWE-323"
    ],
    "cvelist": null,
    "sourceData": "wolfSSL wolfSSL 5.2.1",
    "sourceHref": "",
    "cvss": {
        "score": 6,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "wolfSSL",
    "version": "5.2.1",
    "vendor": "wolfSSL",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}