CVE-2026-115327
libyang through 6.4.13 Uninitialized Pointer Free in NETCONF RPC Parser
- State
- Published
- Severity
- 6.0 Medium
- Published
- Oct 22, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 22, 2026
Description
libyang through 6.4.13 contains an uninitialized pointer free vulnerability in lydxml_env_netconf_rpc() in src/parser_xml.c when parsing NETCONF rpc action envelopes. Peers with a NETCONF session can send an action element containing non-whitespace text via lyd_parse_op() to crash servers like netopeer2 or corrupt the heap.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-824 Access of Uninitialized Pointer
Affected Products
| Product | Versions |
|---|---|
libyangCESNET |
|
References
- https://github.com/CESNET/libyang/issues/2595issue-tracking
- https://github.com/CESNET/libyang/commit/927fce908774289a7d9c07fff5704c33965c9773patch
- https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1330-L1342technical-description
- https://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1196-L1224technical-description
- https://hackmd.io/@haindpwn/libyang-netconf-rpc-envelope-uninit-freetechnical-description
- https://github.com/CESNET/libyangproduct
- VulnCheck Advisory: libyang through 6.4.13 Uninitialized Pointer Free in NETCONF RPC Parserthird-party-advisory
- https://hackmd.io/@haindpwn/cve-2026-115327-libyang-netconf-rpc-envelope-uninit-freeexploit
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