THREATPORT/VULNERABILITY/CVE-2019-20388
HIGH SEVERITY

CVE-2019-20388

Libxml2 vulnerability

CVSS
7.5
EPSS
4.3%
EPSS pct
90th
Exploited
No known
xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.
Affected vendor
Xmlsoft
Affected product
Libxml2
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-401 — Missing Release of Memory (Memory Leak)
Published
2020-01-21

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 availability.

Its EPSS score of 4.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2019-20388

  • Confirm whether Xmlsoft Libxml2 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-20388.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-20388

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-20388 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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