CVE-2026-83020
CVE-2026-83020 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Published:
- Last modified:
Description
Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Platform Security for Java. While the vulnerability is in Oracle Platform Security for Java, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Platform Security for Java. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
Frequently asked questions
- What is CVE-2026-83020?
- Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Platform Security for Java. While the vulnerability is in Oracle Platform Security for Java, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Platform Security for Java. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
- How severe is CVE-2026-83020?
- CVE-2026-83020 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-83020 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-83020?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-83020 published?
- CVE-2026-83020 was published on 2026-09-15 and last updated on 2026-09-17.
References
Other CWE-287 (Improper Authentication) vulnerabilities
- CVE-2026-83099 — Critical (CVSS 10.0): Vulnerability in the Oracle Forms product of Oracle Fusion Middleware (component: Forms Services, C/S, Charmode).…
- CVE-2026-83059 — Critical (CVSS 10.0): Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server).…
- CVE-2026-83021 — Critical (CVSS 10.0): Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Web Container). Supported…
- CVE-2026-71133 — Critical (CVSS 10.0): Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine).…
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