CVE-2026-87291

mediumpriority · track · 21EPSS 0.003 · 25 %ileDEFRNLUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (25th) EPSS

CVSS 5.3 · medium

Is it mine?

25 products

Check your exposure

Who says so?

3 sources

cert_bund · ncsc_nl · certfr

EPSS · scored 2026-10-27

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 attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · secalert_us@oracle.com USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · NCSC-NL NL

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USLLM-inferredCWE-287USCWE-287US

affected products (25)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
GraalVMall versionscert_bundDEcpe:/a:oracle:graalvm:17.0.20.1
GraalVMall versionscert_bundDEcpe:/a:oracle:graalvm:21.3.19.1.1
GraalVMall versionscert_bundDEcpe:/a:oracle:graalvm:21.0.12.1
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:21.0.12.1
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:25.0.4.1
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:11.0.32.1
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:27
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:8u503
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:8u503-perf
Java SEall versionscert_bundDEcpe:/a:oracle:java_se:17.0.20.1
JavaFXall versionscert_bundDEcpe:/a:oracle:javafx:25.0.4
JavaFXall versionscert_bundDEcpe:/a:oracle:javafx:21.0.12
JavaFXall versionscert_bundDEcpe:/a:oracle:javafx:27
Open Source OpenJDKall versionscert_bundDEcpe:/a:oracle:openjdk:-
Oracle Java SE 26.0.2all versionscert_bundDEcpe:/a:oracle:java_se:26.0.2
Amazon Corretto< 8.512.08.1cert_bundDE
Oracle GraalVM≤ vers:unknown/*ncsc_nlNL
Oracle Java SE≤ vers:unknown/*ncsc_nlNL

showing 20 of 25

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0449Meerdere kwetsbaarheden verholpen in Oracle JavaNL2026-10-22csaf · ncsc_nlNL
Oracle heeft meerdere kwetsbaarheden verholpen in Oracle Java.
WID-SEC-W-2026-4079Oracle Java SE: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Java SE ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
CERTFR-2026-AVI-1350Multiples vulnérabilités dans Oracle Java SEFrançais2026-10-21vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund ncsc_nl certfr NVD CVE.org MITRE

published 2026-10-20modified 2026-10-27

references (1) nvd

External citations — patches, advisories, analysis.

https://www.oracle.com/security-alerts/cpuoct2026.html

scry

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