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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

0
Medium
VulnerabilityCVE-2026-70907cvecve-2026-70907
Published: 08/18/2026 (08/18/2026, 21:02:27 UTC)
Source: CVE Database V5
Vendor/Project: Oracle Corporation
Product: 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

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected software

Affected versions
=11.0.32=17.0.20=21.0.12=25.0.4=26.0.2=21.3.19

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/19/2026, 01:06:44 UTC

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.

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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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