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CVE-2022-21404

27
FAUCET Score

CVE-2022-21404 is a critical vulnerability affecting Oracle Helidon, specifically versions 1.4.10 and 2.0.0-RC1 of the Reactive WebServer component. This vulnerability allows an unauthenticated attacker with network access via HTTP to fully compromise the Helidon instance. Despite being difficult to exploit, successful attacks can lead to complete takeover, impacting confidentiality, integrity, and availability. With a CVSS v3.1 score of 8.1 (High), this flaw presents a significant risk. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.10CPE matchmatch criteria
cpe:2.3:a:oracle:helidon:1.4.10:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:oracle:helidon:2.0.0:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 35th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

oraclevendor investigatingvia nvd_reference
View patch

References

oracle.com / security-alerts/cpuapr2022.html
Vendor Advisory