AUGUST 4, 2026
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Case File

CVE-2019-9747

HIGH · CVSS 7.5 EPSS 1.39%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-03-13 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2019-9747
Severity
HIGH
CVSS
7.5
EPSS
1.39%

Original NVD Description

In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query. When mDNS compressed labels point to each other, the function uncompress_nlabel goes into an infinite loop trying to analyze the packet with an mDNS query. As a result, the mDNS server hangs after receiving the malicious mDNS packet. NOTE: the product's web site states "This project is un-maintained, and has been since 2013. ... There are known vulnerabilities ... You are advised to NOT use this library for any new projects / products."