---
title: "CVE-2026-19477: MCC Universal Library for Linux (uldaq) - Buffer Overflow"
description: "MCC Universal Library for Linux (uldaq) <= 1.2.1 contains a stack-based buffer overflow caused by improper bounds checking, letting attackers execute arbitrary code or disclose information, exploit requires crafted input."
url: https://panop.io/threat-heartbeat/CVE-2026-19477/
---

# CVE-2026-19477 MCC Universal Library for Linux (uldaq) - Buffer Overflow

MCC Universal Library for Linux (uldaq) <= 1.2.1 contains a stack-based buffer overflow caused by improper bounds checking, letting attackers execute arbitrary code or disclose information, exploit requires crafted input.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-19477)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution, Information Disclosure

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

17 September 2026

Updated

15 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to the latest version beyond 1.2.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-19477](https://nvd.nist.gov/vuln/detail/CVE-2026-19477)
- [https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/stack-based-buffer-overflow-vulnerability-linux-uldaq.html](https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/stack-based-buffer-overflow-vulnerability-linux-uldaq.html)
- [https://github.com/mccdaq/uldaq/security/advisories/GHSA-9jr3-33mw-g6jc](https://github.com/mccdaq/uldaq/security/advisories/GHSA-9jr3-33mw-g6jc)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)