CVE-2023-21830

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Serialization). Supported versions that are affected are Oracle Java SE: 8u351, 8u351-perf; Oracle GraalVM Enterprise Edition: 20.3.8 and 21.3.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of 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 does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Published: 2023-01-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-21830 is rated Low Risk (30.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.10%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-21830

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.29% 0.10% -0.20%
2 2025-11-18 0.09% 0.29% +0.20%
3 2025-03-30 — 0.09% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-21830

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-21830

OS Trackers for CVE-2023-21830

vendor priority summary link
alpine — CVE-2023-21830: 1 source package rows (openjdk8); 7 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2023-21830
debian not yet assigned CVE-2023-21830 not yet assigned priority: Debian including 2 source packages (openjdk-21, openjdk-8), 4 status rows across 3 suites (forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2023-21830
gentoo normal CVE-2023-21830: 2 GLSA(s) (202401-25, 202409-26), 5 atom(s) (dev-java/icedtea, dev-java/icedtea-bin, dev-java/openjdk, dev-java/openjdk-bin, dev-java/openjdk-jre-bin); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-21830
redhat medium — https://access.redhat.com/security/cve/CVE-2023-21830
suse medium — https://www.suse.com/security/cve/CVE-2023-21830/
ubuntu medium CVE-2023-21830 medium priority: Ubuntu including 10 source packages (icedtea-web, openjdk-13, …), 99 status rows across 12 suites (bionic, focal, jammy, kinetic, lunar, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 58, DNE 32, released 5, ignored 3, needs-triage 1. https://ubuntu.com/security/CVE-2023-21830

Affected software / configurations for CVE-2023-21830

Vendor Product Version Raw CPE
oracle communications_unified_assurance >= 5.5.0, <= 5.5.17 cpe:2.3:a:oracle:communications_unified_assurance:*:*:*:*:*:*:*:*
oracle communications_unified_assurance >= 6.0.0, <= 6.0.2 cpe:2.3:a:oracle:communications_unified_assurance:*:*:*:*:*:*:*:*
oracle graalvm 20.3.8 cpe:2.3:a:oracle:graalvm:20.3.8:*:*:*:enterprise:*:*:*
oracle graalvm 21.3.4 cpe:2.3:a:oracle:graalvm:21.3.4:*:*:*:enterprise:*:*:*
oracle graalvm 22.3.0 cpe:2.3:a:oracle:graalvm:22.3.0:*:*:*:enterprise:*:*:*
oracle jdk 1.8.0 cpe:2.3:a:oracle:jdk:1.8.0:update351:*:*:*:*:*:*
oracle jdk 11.0.17 cpe:2.3:a:oracle:jdk:11.0.17:*:*:*:*:*:*:*
oracle jdk 17.0.5 cpe:2.3:a:oracle:jdk:17.0.5:*:*:*:*:*:*:*
oracle jdk 19.0.1 cpe:2.3:a:oracle:jdk:19.0.1:*:*:*:*:*:*:*
oracle jre 1.8.0 cpe:2.3:a:oracle:jre:1.8.0:update351:*:*:*:*:*:*
oracle jre 11.0.17 cpe:2.3:a:oracle:jre:11.0.17:*:*:*:*:*:*:*
oracle jre 17.0.5 cpe:2.3:a:oracle:jre:17.0.5:*:*:*:*:*:*:*
oracle jre 19.0.1 cpe:2.3:a:oracle:jre:19.0.1:*:*:*:*:*:*:*
azul zulu 6.51 cpe:2.3:a:azul:zulu:6.51:*:*:*:*:*:*:*
azul zulu 7.57 cpe:2.3:a:azul:zulu:7.57:*:*:*:*:*:*:*
azul zulu 8.66 cpe:2.3:a:azul:zulu:8.66:*:*:*:*:*:*:*

References for CVE-2023-21830

cvelogic Threat Intelligence