Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-47021

Enhance XBM image support (Oracle CPU 2026-07)

CVE-2026-47021: Enhance XBM image support (Oracle CPU 2026-07). Not in the CISA KEV catalog. High advisory severity (CVSS 5.3, Red Hat).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-47021 key facts

CISA KEV: Not listed (catalog checked Oct 28, 2026)
Highest advisory severity: High
CVSS base score: 5.3 (Red Hat)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L (Red Hat)
Weakness: CWE-1333
Fixed releases: Red Hat: java-11-openjdk-portable, java-11-openjdk-windows, java-17-openjdk-portable, java-17-openjdk-windows, java-21-openjdk-portable, java-21-openjdk-windows and 44 more in the advisory
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Jul 22, 2026 · Updated Sep 1, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-47021; bulletin-wide values are not repeated here.

Is CVE-2026-47021 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-47021 is not in the CISA KEV catalog (checked Oct 28, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-47021?

Upgrade to a fixed release named by the vendor:

Red Hat: java-11-openjdk-portable, java-11-openjdk-windows, java-17-openjdk-portable, java-17-openjdk-windows, java-21-openjdk-portable, java-21-openjdk-windows

Vendor advisory comparison

NetApp

1 advisory

Advisory severityHigh7.5
High [CVE-2026-46968 +6] July 2026 Java Platform Standard Edition 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1 Vulnerabilities in NetApp Products
NTAP-20260724-0016Source published Jul 24, 2026Source updated Sep 1, 2026
This bulletin covers 7 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Java SE versions 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, and 26.0.1 are susceptible to vulnerabilities that could allow an unauthenticated attacker with network access via multiple protocols including TLS to compromise Oracle Java SE. Refer to “Oracle Critical Patch Update Advisory - July 2026” for additional details. Successful attacks of these vulnerabilities can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, unauthorized creation, deletion or modification access to critical data or all Oracle Java SE accessible data or unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE accessible data. Active IQ Unified Manager for…
Affected products in this advisory
Active IQ Unified Manager for Microsoft Windows
Active IQ Unified Manager for VMware vSphere
Data Infrastructure Insights and Data Secure Storage Workload Security Agent
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
No fixed-version detail extracted. This does not mean no fix exists.
Mitigation guidance
Data Infrastructure Insights and Data Secure Storage Workload Security Agent: Fixed as of 20260831.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityMedium5.3
Medium [CVE-2026-47021] Enhance XBM image support (Oracle CPU 2026-07)
CVE-2026-47021Source published Jul 21, 2026Source updated Jul 21, 2026
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D). Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also 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. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). A flaw was found in OpenJDK. The regex defined in XbmImageDecoder (matchRegex) is vulnerable to a DoS attack when the input contains a long…
Affected products in this advisory
OPENJDK ELS 11.0.32
Red Hat Build of OpenJDK 17.0.20
Red Hat Build of OpenJDK 21.0.12
Red Hat Build of OpenJDK 25.0.4
21 more entries in the full advisory.
Source-reported affected versions
11.0.31
17.0.19
21.0.11
25.0.3
1 more entries in the full advisory.
Source-reported fixed versions
java-11-openjdk-portable
java-11-openjdk-windows
java-17-openjdk-portable
java-17-openjdk-windows
46 more entries in the full advisory.
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

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