How severe is CVE-2022-21404?

CVE-2022-21404 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-21404 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21404?

CVE-2022-21404 primarily affects Oracle Helidon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-21404?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-21404 published?

CVE-2022-21404 was published on 2022-04-19 and last updated on 2026-06-17.

CVE-2022-21404

CVE-2022-21404 is a high-severity vulnerability in Oracle Helidon with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Oracle Helidon
Published: 2022-04-19
Last modified: 2026-06-17

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Reactive WebServer). Supported versions that are affected are 1.4.10 and 2.0.0-RC1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in takeover of Helidon. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2022-21404?: Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Reactive WebServer). Supported versions that are affected are 1.4.10 and 2.0.0-RC1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in takeover of Helidon. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
How severe is CVE-2022-21404?: CVE-2022-21404 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-21404 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21404?: CVE-2022-21404 primarily affects Oracle Helidon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-21404?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-21404 published?: CVE-2022-21404 was published on 2022-04-19 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpuapr2022.html

Affected products (2)

cpe:2.3:a:oracle:helidon:1.4.10:*:*:*:*:*:*:*
cpe:2.3:a:oracle:helidon:2.0.0:rc1:*:*:*:*:*:*

More vulnerabilities in Oracle Helidon

CVE-2021-37136 — High (CVSS 7.5): The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which…
CVE-2021-43797 — Medium (CVSS 6.5): Netty is an asynchronous event-driven network application framework for rapid development of maintainable high…
CVE-2021-21409 — Medium (CVSS 5.9): Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable…
CVE-2021-29425 — Medium (CVSS 4.8): In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like…

All CVEs affecting Oracle Helidon →