THREATPORT/VULNERABILITY/CVE-2019-18224
CRITICAL SEVERITY

CVE-2019-18224

Libidn2 vulnerability

CVSS
9.8
EPSS
3.7%
EPSS pct
89th
Exploited
No known
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
Affected vendor
Gnu
Affected product
Libidn2
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2019-10-21

Risk analysis

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

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2019-18224

  • Confirm whether Gnu Libidn2 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-18224.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-18224

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-18224 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2019-18224?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2019-18224.

Start free scan

No credit card. Agentless.

Related vulnerabilities

CRITICAL
CVE-2022-24312
Interactive Graphical Scada System Data Server vulnerability
CRITICAL
CVE-2022-24313
Interactive Graphical Scada System Data Server vulnerability
CRITICAL
CVE-2022-20702
Rv340 Firmware vulnerability