CVE-2023-21843

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Sound). Supported versions that are affected are Oracle Java SE: 8u351, 8u351-perf, 11.0.17, 17.0.5, 19.0.1; Oracle GraalVM Enterprise Edition: 20.3.8, 21.3.4 and 22.3.0. Difficult to exploit 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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-2023-21843 is rated Low Risk (39.8/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.36%). EPSS rose +1.26% over the last day, indicating growing attacker interest. 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-2023-21843

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 2026-06-15 0.09% 1.36% +1.26%
2 2025-11-21 0.24% 0.09% -0.15%
3 2025-11-18 — 0.24% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-21843

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.7 3.1 LOW
CVSS:3.1/AV:N/AC:H/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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.
 2.2 1.4 [email protected]
3.7 3.1 LOW
CVSS:3.1/AV:N/AC:H/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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.
 2.2 1.4 [email protected]

Weakness enumeration for CVE-2023-21843

OS Trackers for CVE-2023-21843

vendor priority summary link
alpine — CVE-2023-21843: 5 source package rows (openjdk11, openjdk17, openjdk17-ppc64le-bootstrap, openjdk19, openjdk8); 24 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 24, open 0. https://security.alpinelinux.org/vuln/CVE-2023-21843
debian not yet assigned CVE-2023-21843 not yet assigned priority: Debian including 4 source packages (openjdk-11, openjdk-17, openjdk-21, openjdk-8), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 9. https://security-tracker.debian.org/tracker/CVE-2023-21843
gentoo normal CVE-2023-21843: 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-2023-21843
redhat low — https://access.redhat.com/security/cve/CVE-2023-21843
suse low — https://www.suse.com/security/cve/CVE-2023-21843/
ubuntu low CVE-2023-21843 low 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): DNE 32, not-affected 28, released 21, ignored 10, needs-triage 8. https://ubuntu.com/security/CVE-2023-21843

Affected software / configurations for CVE-2023-21843

Vendor Product Version Raw CPE
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:*:*:*:*:*:*:*
azul zulu 11.60 cpe:2.3:a:azul:zulu:11.60:*:*:*:*:*:*:*
azul zulu 13.52 cpe:2.3:a:azul:zulu:13.52:*:*:*:*:*:*:*
azul zulu 15.44 cpe:2.3:a:azul:zulu:15.44:*:*:*:*:*:*:*
azul zulu 17.38 cpe:2.3:a:azul:zulu:17.38:*:*:*:*:*:*:*
azul zulu 19.30 cpe:2.3:a:azul:zulu:19.30:*:*:*:*:*:*:*

References for CVE-2023-21843

cvelogic Threat Intelligence