Speex through 1.2.1 Out-of-Bounds Write via speex_bits_read_whole_bytes

{
  "id": "1bc9a9532cbef90109bb629afe2dfeb5c659bab94ad881b45b1c3cad6cb5320b",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116741",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Speex through 1.2.1 Out-of-Bounds Write via speex_bits_read_whole_bytes",
    "summary": "Speex (libspeex) through 1.2.1 contains an out-of-bounds write vulnerability in speex_bits_read_whole_bytes() in libspeex/bits.c that mishandles length truncation for non-owned SpeexBits buffers. Attackers can stream crafted Speex data into buffers set up with speex_bits_init_buffer() or speex_bits_set_bit_buffer() to corrupt heap or stack memory and crash applications.",
    "evidence": "cve:CVE-2026-116741",
    "products": [
      {
        "name": {
          "value": "speex",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-116741",
      "aliases": [
        "CVE-2026-116741"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 8.3,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 6.5,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
            "integrityImpact": "LOW",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/xiph/speex",
          "vendor": "xiph",
          "product": "speex",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "1.2.1"
            }
          ],
          "packageURL": "pkg:github/xiph/speex",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T21:52:40.782Z",
      "provider": "cve",
      "references": [
        "https://github.com/xiph/speex/issues/42",
        "https://github.com/xiph/speex",
        "https://github.com/xiph/speex/blob/Speex-1.2.1/libspeex/bits.c#L177",
        "https://hackmd.io/@haindpwn/speex-bits-read-whole-bytes-oob-write",
        "https://gitlab.xiph.org/xiph/speex/-/merge_requests/32",
        "https://www.vulncheck.com/advisories/speex-through-1.2.1-out-of-bounds-write-via-speex-bits-read-whole-bytes"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T21:52:40.782Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116741",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 353939,
  "published_at": "2026-10-26T21:52:40.782+00:00"
}