wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse

{
  "id": "f33df48b1cd3bfebe7c5298d6ec9bcd98bc3d547875b2e2915fd49f55982eb0c",
  "url": "https://osv.dev/vulnerability/CVE-2026-5446",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse",
    "summary": "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.",
    "evidence": "osv:CVE-2026-5446",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-5446",
      "aliases": [
        "CVE-2026-5446"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wolfssl/wolfssl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5572a26e4612f3fa28308a61ef1a536e8da81769"
                },
                {
                  "fixed": "1d363f3adceba9d1478230ede476a37b0dcdef24"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "5.2.1"
                      },
                      {
                        "fixed": "5.9.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.2.1"
                      },
                      {
                        "fixed": "5.9.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5446.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.530970581Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5446.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5446",
        "https://github.com/wolfSSL/wolfssl/pull/10111",
        "https://github.com/wolfSSL/wolfssl"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-323"
        ],
        "cna_assigner": "wolfSSL",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5446.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-5446",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507151,
  "published_at": "2026-04-09T21:02:27.201+00:00"
}