HighFix available
wolfssl — security advisory
AES-GCM encryption/decryption with extremely large cumulative single message sizes (>64 GiB) were not properly rejected by the streaming APIs, allowing counter wrap, keystream reuse, and consequent plaintext recovery.
- Products
- wolfssl
- Affected versions
- 5.5.4-2, 5.5.4-2+deb12u1, 5.5.4-2+deb12u2, 5.7.2-0.1, 5.7.2-0.1+deb13u1
- Fixed versions
- 5.5.4-2+deb12u3, 5.7.2-0.1+deb13u2
- CVEs
- CVE-2026-55967
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:53 UTC · Revision 2
Source evidence
AES-GCM encryption/decryption with extremely large cumulative single message sizes (>64 GiB) were not properly rejected by the streaming APIs, allowing counter wrap, keystream reuse, and consequent plaintext recovery.
osv:DEBIAN-CVE-2026-55967
wolfssl
Fixed versions: 5.5.4-2+deb12u3
wolfssl
Fixed versions: 5.7.2-0.1+deb13u2
Complete source record
{
"id": "4513814d63ff7512dff2e5beb7d0fc86dd104b3385d595684435fc30340e1b61",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-55967",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-55967",
"summary": "AES-GCM encryption/decryption with extremely large cumulative single message sizes (>64 GiB) were not properly rejected by the streaming APIs, allowing counter wrap, keystream reuse, and consequent plaintext recovery.",
"evidence": "osv:DEBIAN-CVE-2026-55967",
"products": [
{
"name": {
"value": "wolfssl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.5.4-2+deb12u3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "5.5.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "5.5.4-2+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "5.5.4-2+deb12u2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "wolfssl",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.7.2-0.1+deb13u2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "5.7.2-0.1",
"evidence": "/affected/1/versions"
},
{
"value": "5.7.2-0.1+deb13u1",
"evidence": "/affected/1/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-55967",
"aliases": [
"DEBIAN-CVE-2026-55967"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.5.4-2+deb12u3"
}
]
}
],
"package": {
"name": "wolfssl",
"purl": "pkg:deb/debian/wolfssl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"5.5.4-2",
"5.5.4-2+deb12u1",
"5.5.4-2+deb12u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55967.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.7.2-0.1+deb13u2"
}
]
}
],
"package": {
"name": "wolfssl",
"purl": "pkg:deb/debian/wolfssl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.7.2-0.1",
"5.7.2-0.1+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-55967.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:41.624675655Z",
"provider": "osv",
"upstream": [
"CVE-2026-55967"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-55967"
]
},
"related_cves": [
{
"value": "CVE-2026-55967",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445176,
"published_at": "2026-06-25T18:16:41.33+00:00"
}