HOMEVULNERABILITIESCVE-2020-25689
MEDIUM

CVE-2020-25689

CWE-401Published: November 2, 2020· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

A memory leak flaw was found in WildFly in all versions up to 21.0.0.Final, where host-controller tries to reconnect in a loop, generating new connections which are not properly closed while not able to connect to domain-controller. This flaw allows an attacker to cause an Out of memory (OOM) issue, leading to a denial of service. The highest threat from this vulnerability is to system availability.

NVD Source

Technical Analysis

CVE-2020-25689 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

netapp3 product(s)
active iq unified manageroncommand insightservice level manager
Red Hat7 product(s)
wildflyfusejboss data gridjboss enterprise application platformjboss fuseopenshift application runtimessingle sign-on
Source: NVD CPE · 10 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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25689
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25689
ADVISORYhttps://security.netapp.com/advisory/ntap-20201123-0006/
ADVISORYhttps://security.netapp.com/advisory/ntap-20201123-0006/

All References (4)

→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25689Exploit · Issue Tracking · Patch · Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20201123-0006/Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25689Exploit · Issue Tracking · Patch · Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20201123-0006/Third Party Advisory

Quick Facts

CVE IDCVE-2020-25689
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-401
CISA KEVNo
Affected2 vendor(s)
PublishedNov 2, 2020

Related CVEs (CWE-401)

CVE-2019-17340
8.8
CVE-2021-40633
8.8
CVE-2023-33718
8.8
CVE-2019-6128
8.8
CVE-2026-0646
8.7
CVE-2025-20133
8.6

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-25689 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.
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