No exploitation reportedFix available

CVE-2019-19343

Q: Is CVE-2019-19343 actively exploited?

Active exploitation of CVE-2019-19343 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-19343?

CVE-2019-19343 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2021-03-23
Fixed in5.0.14
WeaknessCWE-400 · CWE-404

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in Undertow when using Remoting as shipped in Red Hat Jboss EAP before version 7.2.4. A memory leak in HttpOpenListener due to holding remote connections indefinitely may lead to denial of service. Versions before undertow 2.0.25.SP1 and jboss-remoting 5.0.14.SP1 are believed to be vulnerable.

Timeline

dates in UTC

2021-03-2321:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-19343?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-19343?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Redhat jboss-remoting

Branch	Affected	Fixed in	Source
5.0	< 5.0.14	5.0.14	NVD
5.0	= 5.0.14	no fix published	NVD

Redhat undertow

Branch	Affected	Fixed in	Source
2.0	< 2.0.25	2.0.25	NVD
2.0	= 2.0.25	no fix published	NVD

Netapp active iq unified manager

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Redhat jboss-remoting to 5.0.14

Advisories and patches

bugzilla.redhat.comVendor Advisory
issues.redhat.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
NVDweakness (CWE)CWE-404read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2021-03-23
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-19343?

Is CVE-2019-19343 actively exploited?

Active exploitation of CVE-2019-19343 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-19343?

CVE-2019-19343 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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