Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 4.41% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2021
CVE-2021-35603High confidence
Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE)
Oracle Corporation · Java SE JDK and JRE
3.7LowCVSS 3.1
Patch only the product branches with a verified fix
Fix availability varies by productLow technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 11 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityLow→Operational priority:Low, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Oracle Corporation Java SE JDK and JRE and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Remediation availability differs by product scope
Verified remediation exists for at least one product or source, but 11 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
- Siemens ProductCERT: 11 affected or under-investigation product states without a fixed product state in the same current advisory
Distribution package intelligence
13 package statesRelease-specific package status
Alpine, Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Alpine v3.23v3.23 · community | openjdk11 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 11.0.13_p8-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.23v3.23 · community | openjdk17 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 17.0.1_p12-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.23v3.23 · community | openjdk8 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 8.312.07-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.22v3.22 · community | openjdk11 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 11.0.13_p8-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.22v3.22 · community | openjdk17 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 17.0.1_p12-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.22v3.22 · community | openjdk8 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 8.312.07-r0 | Alpine Security Database ↗Source updated 11 Sep 2026 |
| Alpine v3.21v3.21 · community | openjdk11 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 11.0.13_p8-r0 | Alpine Security Database ↗Source updated 19 Aug 2026 |
| Alpine v3.21v3.21 · community | openjdk17 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 17.0.1_p12-r0 | Alpine Security Database ↗Source updated 19 Aug 2026 |
| Alpine v3.21v3.21 · community | openjdk8 | Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected. | 8.312.07-r0 | Alpine Security Database ↗Source updated 19 Aug 2026 |
| Debian bookwormbookworm · source | openjdk-17 | Vendor fix publishedDebian records a fixed source-package version for this release. | 17.0.1+12-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | openjdk-11 | Vendor fix publishedDebian records a fixed source-package version for this release. | 11.0.13+8-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | openjdk-17 | Vendor fix publishedDebian records a fixed source-package version for this release. | 17.0.1+12-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | openjdk-8 | Vendor fix publishedDebian records a fixed source-package version for this release. | 8u312-b07-1 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
Direct vendor intelligence
2 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2021-35603 · CSAF 2.0 · revision 3 · finalRed Hat Product SecurityOpenJDK: Non-constant comparison during TLS handshakes (JSSE, 8269618)
The vendor explicitly identifies these products as affected by this CVE.
- Linux as a component of Red Hat build of OpenJDK 1.8
- Windows as a component of Red Hat build of OpenJDK 1.8
- Linux as a component of Red Hat build of OpenJDK 11
- Windows as a component of Red Hat build of OpenJDK 11
- windows as a component of Red Hat build of OpenJDK 17
- Summary
- Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of 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 can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
- Remediation
- For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of IBM Java must be restarted for this update to take effect.
SSA-202008 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-202008: Multiple Vulnerabilities in Ruggedcom Rox Before V2.17.0
The vendor explicitly identifies these products as affected by this CVE.
- RUGGEDCOM ROX MX5000
- RUGGEDCOM ROX MX5000RE
- RUGGEDCOM ROX RX1400
- RUGGEDCOM ROX RX1500
- RUGGEDCOM ROX RX1501
- RUGGEDCOM ROX RX1510
- RUGGEDCOM ROX RX1511
- RUGGEDCOM ROX RX1512
- RUGGEDCOM ROX RX1524
- RUGGEDCOM ROX RX1536
- RUGGEDCOM ROX RX5000
- Summary
- Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of 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 can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
- Remediation
- Update to V2.17.0 or later version
Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 11 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by product01
What, why and how
Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of 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 can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
What
Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of 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 can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Why
The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of 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 can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Why
The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- High: exploitation depends on specific conditions
- Security boundary
- Unchanged: impact remains within the vulnerable component's security authority
- Weakness
?
CWE means Common Weakness Enumeration. - CWE not yet assigned
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Fix availability varies by product
- Affected
- Fixed
- java-1.7.1-ibm-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.7.1-ibm-demo-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.7.1-ibm-devel-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.7.1-ibm-jdbc-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.7.1-ibm-plugin-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.7.1-ibm-src-1:1.7.1.5.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-demo-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-devel-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-jdbc-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-plugin-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-ibm-src-1:1.8.0.7.5-1jpp.1.el7.x86_64 as a component of Red Hat Enterprise Linux Client Supplementary (v. 7)
- java-1.8.0-openjdk-1:1.8.0.312.b07-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-1:1.8.0.312.b07-1.el7_9.src as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-1:1.8.0.312.b07-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-debuginfo-1:1.8.0.312.b07-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-debuginfo-1:1.8.0.312.b07-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-headless-1:1.8.0.312.b07-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-headless-1:1.8.0.312.b07-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-1:11.0.13.0.8-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-1:11.0.13.0.8-1.el7_9.src as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-1:11.0.13.0.8-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-debuginfo-1:11.0.13.0.8-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-debuginfo-1:11.0.13.0.8-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-headless-1:11.0.13.0.8-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-11-openjdk-headless-1:11.0.13.0.8-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)
- java-1.8.0-openjdk-accessibility-1:1.8.0.312.b07-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
- java-1.8.0-openjdk-accessibility-1:1.8.0.312.b07-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
- java-1.8.0-openjdk-debuginfo-1:1.8.0.312.b07-1.el7_9.i686 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
- java-1.8.0-openjdk-debuginfo-1:1.8.0.312.b07-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)
- and 937 more
- Action
- Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 20 Oct 2021 · Last source change 4 Aug 2024, 00:40 UTC · CWE not yet assigned
CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2021-22239
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceUnavailable
NVD statusNVD modified after enrichment
Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- Java SE:7u311; Java SE:8u301; Java SE:11.0.12; Java SE:17; Oracle GraalVM Enterprise Edition:20.3.3; Oracle GraalVM Enterprise Edition:21.2.0 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
- After
- Java SE:7u311; Java SE:8u301; Java SE:11.0.12; Java SE:17; Oracle GraalVM Enterprise Edition:20.3.3; Oracle GraalVM Enterprise Edition:21.2.0 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of IBM Java must be restarted for this update to take effect.
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.