CVE-2026-70907: Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. in Oracle Corporation Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition
CVE-2026-70907 is a medium severity vulnerability affecting Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It involves a flaw in the JSSE component that allows an unauthenticated attacker with network access via TLS to cause a partial denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. Exploitation requires supplying data to specific APIs without using untrusted Java Web Start applications or applets. The CVSS 3.1 base score is 5.3, indicating a medium impact primarily on availability. Oracle has published a Critical Security Patch Update advisory referencing this vulnerability but does not explicitly confirm patch availability or remediation status for this specific issue.
AI Analysis
Technical Summary
This vulnerability exists in the JSSE component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service by supplying data to certain APIs. The vulnerability affects multiple versions of Oracle Java SE (8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, 26.0.2), Oracle GraalVM for JDK (17.0.20, 21.0.12), and Oracle GraalVM Enterprise Edition (21.3.19). The CVSS vector indicates no impact on confidentiality or integrity, only availability. The vendor advisory is a broad Critical Security Patch Update covering many products but does not explicitly state a fix for this vulnerability, so patch status is not confirmed.
Potential Impact
Successful exploitation can result in unauthorized partial denial of service affecting availability of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. There is no impact on confidentiality or integrity. The attack requires network access via TLS and does not require user interaction or privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the Oracle Critical Security Patch Update advisory at https://www.oracle.com/security-alerts/cspuaug2026.html for current remediation guidance. Oracle strongly recommends applying security patches promptly and remaining on actively supported versions to mitigate exploitation risks. No specific temporary mitigations are detailed in the advisory.
CVE-2026-70907: Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. in Oracle Corporation Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition
Description
CVE-2026-70907 is a medium severity vulnerability affecting Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It involves a flaw in the JSSE component that allows an unauthenticated attacker with network access via TLS to cause a partial denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. Exploitation requires supplying data to specific APIs without using untrusted Java Web Start applications or applets. The CVSS 3.1 base score is 5.3, indicating a medium impact primarily on availability. Oracle has published a Critical Security Patch Update advisory referencing this vulnerability but does not explicitly confirm patch availability or remediation status for this specific issue.
CVSS v3.1
Score 5.3medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in the JSSE component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service by supplying data to certain APIs. The vulnerability affects multiple versions of Oracle Java SE (8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, 26.0.2), Oracle GraalVM for JDK (17.0.20, 21.0.12), and Oracle GraalVM Enterprise Edition (21.3.19). The CVSS vector indicates no impact on confidentiality or integrity, only availability. The vendor advisory is a broad Critical Security Patch Update covering many products but does not explicitly state a fix for this vulnerability, so patch status is not confirmed.
Potential Impact
Successful exploitation can result in unauthorized partial denial of service affecting availability of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. There is no impact on confidentiality or integrity. The attack requires network access via TLS and does not require user interaction or privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the Oracle Critical Security Patch Update advisory at https://www.oracle.com/security-alerts/cspuaug2026.html for current remediation guidance. Oracle strongly recommends applying security patches promptly and remaining on actively supported versions to mitigate exploitation risks. No specific temporary mitigations are detailed in the advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-04T22:06:34.605Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84ccadc6e8be0332c376b2
Added to database: 08/18/2026, 21:20:45 UTC
Last enriched: 08/19/2026, 01:06:44 UTC
Last updated: 08/19/2026, 01:52:24 UTC
Views: 3
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