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NVD Vulnerability Details :
CVE-2026-44673
Deferred
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-14 May, 2026 | 21:16
Updated At-15 May, 2026 | 15:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-190Secondarysecurity-advisories@github.com
CWE ID: CWE-190
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xhsecurity-advisories@github.com
N/A
https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A
Change History
0Changes found
Details not found