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01 Record

CVE-2026-87291

Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Easily exploitable vulnerability allows unauthenticated

MediumPUBLISHEDCNA: oracle
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
View raw JSON

02 Description

Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Easily exploitable vulnerability allows unauthenticated

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.30% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 23.5% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-27.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-20 21:23Z8 DAYS AGO
Last updated
2026-10-27 18:52Z1 DAY AGO
Reserved
2026-09-08
Assigning CNA
oracle
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
  • CWE-287Improper AuthenticationClass
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.2
Document digest
d2f2cae03bee097b71035f6d9b2a04c43fb84657e839c4a9dcb603b9e56ed5d9

05 Affected products

VendorProductVersionsPlatforms
Oracle CorporationOracle Java SE21.0.12.1, 25.0.4.1, 27—

06 References

07 Fixed in

AlmaLinux 9

  • java-25-openjdk
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-javadoc
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-javadoc-zip
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • java-25-openjdk
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-javadoc
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-javadoc-zip
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • java-25-openjdk
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-crypto-adapter-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-demo-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-devel-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-headless-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-javadoc
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-javadoc-zip
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-jmods-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-src-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1
  • java-25-openjdk-static-libs-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el9.alma.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • java-25-openjdk
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-crypto-adapter-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-demo-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-devel-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-headless-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-javadoc
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-javadoc-zip
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-jmods-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-src-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs-fastdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1
  • java-25-openjdk-static-libs-slowdebug
    Fixed in 1:25.0.5.0.8-1.0.el10.alma.1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • openjdk-21
    Fixed in 21.0.13+9-1~deb13u2
  • openjdk-25
    Fixed in 25.0.5+8-1~deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • openjdk-21
    Fixed in 21.0.13+9-1
  • openjdk-25
    Fixed in 25.0.5+8-1
  • openjdk-27
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • openjdk-9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • openjdk-13
    No fix yet
  • openjdk-16
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • openjdk-17
    No fix yet
  • openjdk-18
    No fix yet
  • openjdk-21
    No fix yet
  • openjdk-25
    No fix yet
  • openjdk-8
    No fix yet
  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • openjdk-17
    No fix yet
  • openjdk-21
    No fix yet
  • openjdk-25
    No fix yet
  • openjdk-8
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • openjdk-17
    No fix yet
  • openjdk-17-crac
    No fix yet
  • openjdk-21
    No fix yet
  • openjdk-21-crac
    No fix yet
  • openjdk-25
    No fix yet
  • openjdk-8
    No fix yet
  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • openjdk-17
    No fix yet
  • openjdk-17-crac
    No fix yet
  • openjdk-21
    No fix yet
  • openjdk-21-crac
    No fix yet
  • openjdk-25
    No fix yet
  • openjdk-27
    No fix yet
  • openjdk-8
    No fix yet
  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • openjdk-8
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • openjdk-17
    No fix yet
  • openjdk-8
    No fix yet
  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • openjdk-17
    No fix yet
  • openjdk-21
    No fix yet
  • openjdk-8
    No fix yet
  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 24.04 LTS

  • openjdk-lts
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.