CVE-2019-9917

Znc vulnerability

CVSS

6.5

EPSS

3.1%

EPSS pct

86th

Exploited

No known

ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.

Affected vendor

Znc

Affected product

Znc

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2019-03-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2019-9917

Confirm whether Znc Znc is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-9917.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-9917

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-9917 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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