Skip to content
Noroxi
NVD / CVE Program· CNA oracle

CVE-2023-21830: Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Serialization).

MediumCVSS 5.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 65.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: java-1.8.0-openjdk (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7; java-1.8.0-openjdk-accessibility (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7; java-1.8.0-openjdk-accessibility-fastdebug (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to java-1.8.0-openjdk (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7; java-1.8.0-openjdk-accessibility (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7; java-1.8.0-openjdk-accessibility-fastdebug (AlmaLinux:8) 1:1.8.0.362.b09-2.el8_7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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
Jan 17, 2023
Updated
Jun 17, 2026
EPSS
1.0% · 65th percentile
CWE
—

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · oracle
5.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-21830

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for oracle records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
oraclecommunications unified assurance
oraclegraalvm
oraclejdk
oraclejre
azulzulu

Versions reported by the vendor

Affected version ranges reported by the assigning authority (oracle). Independent of NVD's CPE analysis and usually ahead of it.

  • Oracle Corporation Java SE JDK and JRE

    • Oracle Java SE:8u351, Oracle Java SE:8u351-perf, Oracle GraalVM Enterprise Edition:20.3.8, Oracle GraalVM Enterprise Edition:21.3.4affected
Affected versions · NVD (8)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • oracle jdk1.8.0
  • oracle jdk11.0.17
  • oracle jdk17.0.5
  • oracle jdk19.0.1
  • oracle jre1.8.0
  • oracle jre11.0.17
  • oracle jre17.0.5
  • oracle jre19.0.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8java-1.8.0-openjdkbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-accessibilitybefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-accessibility-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-accessibility-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-demobefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-demo-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-demo-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-develbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-devel-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-devel-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-headlessbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-headless-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-headless-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-javadocbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-javadoc-zipbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-srcbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-src-fastdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:8java-1.8.0-openjdk-src-slowdebugbefore 1:1.8.0.362.b09-2.el8_71:1.8.0.362.b09-2.el8_7
AlmaLinux:9java-1.8.0-openjdkbefore 1:1.8.0.362.b09-2.el9_11:1.8.0.362.b09-2.el9_1
AlmaLinux:9java-1.8.0-openjdk-demobefore 1:1.8.0.362.b09-2.el9_11:1.8.0.362.b09-2.el9_1
AlmaLinux:9java-1.8.0-openjdk-demo-fastdebugbefore 1:1.8.0.362.b09-2.el9_11:1.8.0.362.b09-2.el9_1
AlmaLinux:9java-1.8.0-openjdk-demo-slowdebugbefore 1:1.8.0.362.b09-2.el9_11:1.8.0.362.b09-2.el9_1

+96

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:java-1.8.0-openjdk1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-accessibility1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-accessibility-fastdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-accessibility-slowdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-demo1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-demo-fastdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-demo-slowdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-devel1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-devel-fastdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-devel-slowdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-fastdebug1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
almalinux:java-1.8.0-openjdk-headless1:1.8.0.362.b09-2.el8_7 · AlmaLinux:8Package registry (OSV)
alpine:openjdk88.362.09-r0 · Alpine:v3.15Package registry (OSV)
debian:openjdk-2121~7ea-1 · Debian:13Package registry (OSV)
opensuse:java-1_8_0-ibm1.8.0_sr8.0-150000.3.71.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:java-1_8_0-openj91.8.0.362-150200.3.30.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:java-1_8_0-openjdk1.8.0.362-150000.3.76.1 · openSUSE:Leap 15.4Package registry (OSV)
red hat:java-1.8.0-openjdk1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-accessibility1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-debuginfo1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-debugsource1:1.8.0.362.b08-1.el8_1 · Red Hat:rhel_e4s:8.1::appstreamPackage registry (OSV)
red hat:java-1.8.0-openjdk-demo1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-demo-debuginfo1:1.8.0.362.b08-1.el8_1 · Red Hat:rhel_e4s:8.1::appstreamPackage registry (OSV)
red hat:java-1.8.0-openjdk-demo-slowdebug-debuginfo1:1.8.0.362.b08-1.el8_1 · Red Hat:rhel_e4s:8.1::appstreamPackage registry (OSV)
red hat:java-1.8.0-openjdk-devel1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-headless1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-javadoc1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-javadoc-zip1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:java-1.8.0-openjdk-src1:1.8.0.362.b08-1.el7_9 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
rocky linux:java-1.8.0-openjdk1:1.8.0.362.b09-2.el8_7 · Rocky Linux:8Package registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records