HIGH
CVE-2019-20388
CWE-401Published: January 21, 2020· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.
Technical Analysis
CVE-2019-20388 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
netapp21 product(s)
cloud backupclustered data ontapontap select deploy administration utilityplug-in for symantec netbackupsmi-s providersnapdrivesteelstore cloud integrated storageh300s firmwareh300sh500s firmwareh500sh700s firmware+9
openSUSE1 product(s)
leap
Oracle6 product(s)
communications cloud native core network function cloud native environmententerprise manager base platformenterprise manager ops centermysql workbenchpeoplesoft enterprise peopletoolsreal user experience insight
xmlsoft1 product(s)
libxml2
Source: NVD CPE · 36 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (24)
→
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.htmlMailing List · Third Party Advisory
→
https://gitlab.gnome.org/GNOME/libxml2/merge_requests/68Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202010-04Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200702-0005/Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpujul2020.htmlPatch · Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.htmlMailing List · Third Party Advisory
→
https://gitlab.gnome.org/GNOME/libxml2/merge_requests/68Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlMailing List · Third Party Advisory
Quick Facts
CVE IDCVE-2019-20388
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-401
CISA KEVNo
Affected6 vendor(s)
PublishedJan 21, 2020
Related CVEs (CWE-401)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-20388 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.