CVE-2026-115327

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.30% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 23.2% of scored records. A rank, not a probability.

NVD base score

6.0 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-29.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-22 10:57Z7 DAYS AGO

Last updated

2026-10-29 02:10Z17 HR AGO

Reserved

2026-10-22

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 6.0)

CNA CVSS vector

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

Weaknesses

• CWE-824Access of Uninitialized PointerBase

Data version

5.2

Document digest

1b411536c0835d9122b4af81a006be687105c24b65eb2976340c21b1066d1a3e

• github.comhttps://github.com/CESNET/libyang/issues/2595issue-tracking
• github.comhttps://github.com/CESNET/libyang/commit/927fce908774289a7d9c07fff5704c33965c9773patch
• github.comhttps://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1330-L1342technical-description
• github.comhttps://github.com/CESNET/libyang/blob/v6.4.13/src/parser_xml.c#L1196-L1224technical-description
• hackmd.iohttps://hackmd.io/@haindpwn/libyang-netconf-rpc-envelope-uninit-freetechnical-description
• github.comhttps://github.com/CESNET/libyangproduct
• www.vulncheck.comVulnCheck Advisory: libyang through 6.4.13 Uninitialized Pointer Free in NETCONF RPC Parserhttps://www.vulncheck.com/advisories/libyang-through-6.4.13-uninitialized-pointer-free-in-netconf-rpc-parserthird-party-advisory
• hackmd.iohttps://hackmd.io/@haindpwn/cve-2026-115327-libyang-netconf-rpc-envelope-uninit-freeexploit