CVE-2026-44673
Full vulnerability record from the local CVENow database.
Description
libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-05-14 21:16:47.500000
Last modified
2026-10-26 14:10:00.130000
View original CVE JSON
{
"id": "CVE-2026-44673",
"sourceIdentifier": "[email protected]",
"published": "2026-05-14T21:16:47.500",
"lastModified": "2026-10-26T14:10:00.130",
"vulnStatus": "Deferred",
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{
"lang": "en",
"value": "libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15."
},
{
"lang": "es",
"value": "libyang es una biblioteca del lenguaje de modelado de datos YANG. Antes de SO 5.2.15, lyb_read_string() en src/parser_lyb.c contiene un desbordamiento de entero que resulta en un desbordamiento de búfer en el heap al analizar un blob binario LYB creado maliciosamente. Un atacante que puede suministrar datos LYB a cualquier consumidor de libyang (servidor NETCONF, sysrepo, etc.) puede desencadenar una caída o una posible corrupción del heap. Esta vulnerabilidad está corregida en SO 5.2.15."
}
],
"affected": [
{
"source": "[email protected]",
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{
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