Labview EUVD-2026-19899

Victim must open a specially crafted .lvlib file in NI LabVIEW 2026 Q1 (26.1.0) or prior versions. Attacker delivers malicious file; no authentication or special configuration required.

Real-world risk is moderate despite the 8.5 CVSS score. The CVSS vector reveals critical constraints: local attack vector (AV:L) requires the malicious file to reach the target system through social engineering, email attachments, or compromised file shares rather than remote network exploitation. User interaction (UI:P) mandates the victim actively open the weaponized .lvlib file in LabVIEW. No privileges required (PR:N) means any user can be targeted, and low attack complexity (AC:L) indicates reliable exploitation once the file is opened. However, no public exploit code exists and no CISA KEV listing confirms active exploitation, significantly reducing immediate threat. EPSS probability unavailable but would likely be low given the local-only attack surface. SSVC decision factors favor lower prioritization: exploitation status is POC-unlikely given specialized file format knowledge required, not automatable due to user interaction dependency, and technical impact while high (code execution) is gated behind significant social engineering barriers. This is a genuine vulnerability requiring remediation for LabVIEW environments, but not an internet-facing mass exploitation risk like remote network vulnerabilities.

An attacker crafts a malicious LabVIEW project library (.lvlib) file with deliberately malformed metadata structures designed to trigger the out-of-bounds write during parsing. This weaponized file is delivered via spear-phishing email to engineers or researchers in target organizations that use LabVIEW for test automation or data acquisition, disguised as a legitimate shared project or instrument driver library. When the victim opens the malicious .lvlib file in LabVIEW to inspect or integrate the purported project components, the parser writes beyond allocated buffer boundaries, corrupting adjacent memory regions. The attacker leverages this memory corruption to overwrite function pointers or return addresses, redirecting execution to embedded shellcode that establishes persistence, exfiltrates proprietary measurement algorithms or test data from the LabVIEW environment, or pivots to other systems on the corporate network. No public exploit code exists, but the low attack complexity suggests experienced exploit developers could reliably weaponize this vulnerability given access to LabVIEW for testing.