No exploitation reportedFix available

CVE-2021-3503

Q: Is CVE-2021-3503 actively exploited?

Active exploitation of CVE-2021-3503 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-3503?

CVE-2021-3503 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

No exploitation reported by the sources we read.

Published2022-04-18
Fixed in23.0.1
WeaknessCWE-200

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 Wildfly where insufficient RBAC restrictions may lead to expose metrics data. The highest threat from this vulnerability is to the confidentiality.

Timeline

dates in UTC

2022-04-1817:15CVE 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-2021-3503?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-3503?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Redhat wildfly

Branch	Affected	Fixed in	Source
23.0	< 23.0.1	23.0.1	NVD · OSV

wildfly-metrics

Branch	Affected	Fixed in	Source
23.0	< 23.0.1.Final	23.0.1.Final	OSV

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

Fix

Update Redhat wildfly to 23.0.1

Advisories and patches

access.redhat.comVendor Advisory
bugzilla.redhat.comVendor Advisory
github.comPatch
issues.redhat.comVendor Advisory

Detection

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

Sources

NVDCVSS 3.14.3read 2026-10-23
NVDCVSS 2.04read 2026-10-23
CNAweakness (CWE)CWE-200read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Published: 2022-04-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-3503?

A flaw was found in Wildfly where insufficient RBAC restrictions may lead to expose metrics data. The highest threat from this vulnerability is to the confidentiality.

Is CVE-2021-3503 actively exploited?

Active exploitation of CVE-2021-3503 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3503?

CVE-2021-3503 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

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