No exploitation reportedFix available

CVE-2023-21930

Q: Is CVE-2023-21930 actively exploited?

Active exploitation of CVE-2023-21930 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-21930?

CVE-2023-21930 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

No exploitation reported by the sources we read.

Published2023-04-18
Fixed in8

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

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u361, 8u361-perf, 11.0.18, 17.0.6, 20; Oracle GraalVM Enterprise Edition: 20.3.9, 21.3.5 and 22.3.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability 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. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Timeline

dates in UTC

2023-04-1820:15CVE 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-2023-21930?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-21930?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Java (Oracle JDK)

Branch	Affected	Fixed in	Source
8.x	< 8	8	NVD
11.x	≥ 11, ≤ 11.0.18	no fix published	NVD
17.x	≥ 17, ≤ 17.0.6	no fix published	NVD
8.x	= 8	no fix published	NVD
20.x	= 20	no fix published	NVD

java

Branch	Affected	Fixed in	Source
20.0	≥ 18.0.0, < 20.0.1	20.0.1	OSV
17.0	≥ 12.0.0, < 17.0.7	17.0.7	OSV
11.0	≥ 9.0.0, < 11.0.19	11.0.19	OSV
8.0	≥ 1.9.0, < 8.0.371	8.0.371	OSV
1.8	< 1.8.0	1.8.0	OSV

java-min

Branch	Affected	Fixed in	Source
20.0	≥ 18.0.0, < 20.0.1	20.0.1	OSV
17.0	≥ 12.0.0, < 17.0.7	17.0.7	OSV
11.0	≥ 9.0.0, < 11.0.19	11.0.19	OSV
8.0	≥ 1.9.0, < 8.0.371	8.0.371	OSV
1.8	< 1.8.0	1.8.0	OSV

10 more products in the sources.

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

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

java-1.8.0-openjdkAlmaLinux:9all versions · fixed in 1:1.8.0.372.b07-1.el9_1and 16 other packages
java-1.8.0-openjdkAlmaLinux:8all versions · fixed in 1:1.8.0.372.b07-1.el8_7and 19 other packages
java-11-openjdkAlmaLinux:9all versions · fixed in 1:11.0.19.0.7-1.el9_1and 22 other packages
java-11-openjdkAlmaLinux:8all versions · fixed in 1:11.0.19.0.7-1.el8_7and 22 other packages
java-17-openjdkAlmaLinux:9all versions · fixed in 1:17.0.7.0.7-1.el9_1and 22 other packages
java-17-openjdkAlmaLinux:8all versions · fixed in 1:17.0.7.0.7-1.el8_7and 22 other packages

Full record on NVD

Fix

Update Java (Oracle JDK) to 8

Advisories and patches

www.oracle.comPatch · Vendor Advisory

Detection

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

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2024-07-22
OpenCVESSVC decisionnone—
CNACVSS 3.17.4read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: 2023-04-18
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-21930?

Is CVE-2023-21930 actively exploited?

Active exploitation of CVE-2023-21930 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-21930?

CVE-2023-21930 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

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