How severe is CVE-2024-20921?

CVE-2024-20921 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-20921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20921?

CVE-2024-20921 primarily affects Oracle Graalvm. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20921?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-20921 have an EU (EUVD) identifier?

Yes. CVE-2024-20921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18636.

When was CVE-2024-20921 published?

CVE-2024-20921 was published on 2024-02-17 and last updated on 2026-06-17.

CVE-2024-20921

CVE-2024-20921 is a medium-severity vulnerability in Oracle Graalvm with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18636
Weakness: CWE-276
Affected product: Oracle Graalvm
Published: 2024-02-17
Last modified: 2026-06-17

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Hotspot). Supported versions that are affected are Oracle Java SE: 8u391, 8u391-perf, 11.0.21, 17.0.9, 21.0.1; Oracle GraalVM for JDK: 17.0.9, 21.0.1; Oracle GraalVM Enterprise Edition: 20.3.12, 21.3.8 and 22.3.4. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Frequently asked questions

What is CVE-2024-20921?: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Hotspot). Supported versions that are affected are Oracle Java SE: 8u391, 8u391-perf, 11.0.21, 17.0.9, 21.0.1; Oracle GraalVM for JDK: 17.0.9, 21.0.1; Oracle GraalVM Enterprise Edition: 20.3.12, 21.3.8 and 22.3.4. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
How severe is CVE-2024-20921?: CVE-2024-20921 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-20921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20921?: CVE-2024-20921 primarily affects Oracle Graalvm. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20921 have an EU (EUVD) identifier?: Yes. CVE-2024-20921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18636.
When was CVE-2024-20921 published?: CVE-2024-20921 was published on 2024-02-17 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:a:oracle:graalvm:20.3.12:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:21.3.8:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:22.3.4:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:17.0.9:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:21.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jdk:1.8.0:update391:*:*:-:*:*:*
cpe:2.3:a:oracle:jdk:1.8.0:update391:*:*:enterprise_performance_pack:*:*:*
cpe:2.3:a:oracle:jdk:11.0.21:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jdk:17.0.9:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jdk:21.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:1.8.0:update391:*:*:-:*:*:*
cpe:2.3:a:oracle:jre:1.8.0:update391:*:*:enterprise_performance_pack:*:*:*
cpe:2.3:a:oracle:jre:11.0.21:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:17.0.9:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jre:21.0.1:*:*:*:*:*:*:*

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