What is the CVSS score of CVE-2026-83479?

CVE-2026-83479 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

How to fix or mitigate CVE-2026-83479?

Within 24 hours, inventory all Oracle E-Business Suite deployments and confirm which run Oracle Contracts on versions 12.2.14-12.2.15; restrict HTTP and network access to Contracts to trusted business or administrative segments, enforce least-privilege EBS roles, and enable audit logging with alerts for unusual Contracts activity or component takeover indicators. Within 7 days, check Oracle's advisory and Critical Patch Update schedule for a vendor-released fix, apply any documented workaround or secure configuration, validate that low-privilege accounts cannot reach Contracts, and deploy virtual patching or WAF rules if supported. Within 30 days, build a remediation plan to upgrade, isolate, or retire affected EBS 12.2.14-12.2.15 instances, complete a privileged-access and account review across Oracle Contracts, and retest compensating controls until Oracle releases a patch.

Oracle Contracts CVE-2026-83479

EUVD-2026-79766 HIGH

Improper Privilege Management (CWE-269)

2026-09-15 secalert_us@oracle.com

GHSA-5pf4-pj9j-q5q2

Privilege Escalation Oracle E Business Suite

8.8

CVSS 3.1 · Vendor: oracle

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Obtain low-privilege EBS credentials
Delivery

Reach Contracts over HTTP
Exploit

Send crafted request to Internal Operations
Execution

Exploit flaw for takeover
Impact

Read/modify/destroy all Contracts data

Vulnerability Assessment

Weakness	CWE CWE-269 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V8 - Authorization Least privilege enforcement MITRE ATT&CK 1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	Requires a valid low-privilege authenticated account (PR:L) on Oracle Contracts within Oracle E-Business Suite, reachable over the network via HTTP. No user interaction and no elevated privileges are needed, and attacks work against default configurations of the affected versions (12.2.14-12.2.15). The primary limiting factor is the need for any authenticated foothold - this is not a pre-authentication flaw - which meaningfully narrows the attacker population versus the pre-auth siblings in the same CPU. Exposure is further limited to environments running the Contracts module of EBS 12.2.14-12.2.15.
Impact	This is a genuinely high-priority vulnerability, though not the maximum tier. The CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects an easily exploitable, network-reachable flaw over HTTP that yields full compromise (takeover) of Oracle Contracts with only low privileges required. The single meaningful limiter is PR:L - an attacker needs some authenticated foothold (any low-privilege EBS account), which is why the score sits below the 9.8 pre-auth and 9.9/10.0 scope-changed siblings in the same Oracle September 2026 CPU. No EPSS score, KEV listing, or public POC is present in the provided data, so exploitation status is: no public exploit identified at time of analysis. There is no conflict among the signals - CVSS, description, and EUVD agree on network HTTP, low-priv, full triad impact. The main caveat is that Oracle's CPU advisory (cspusep2026) provides zero technical detail and CWE is N/A, so the specific vulnerability class cannot be verified. Given EBS's exposure in enterprise ERP environments and the low bar (any authenticated user), this warrants prompt patching for organizations running the affected 12.2.14-12.2.15 releases.
Exploit ScenarioDerived	An attacker with a low-privilege Oracle E-Business Suite account (or credentials obtained via phishing/reuse) sends crafted HTTP requests to the Oracle Contracts Internal Operations component. Exploitation is rated easy (AC:L) and requires no user interaction, allowing the attacker to escalate to full takeover of the Contracts module - reading, modifying, and destroying all its data. No public exploit code is currently identified.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

Oracle Contracts, a module within Oracle E-Business Suite 12.2.14-12.2.15, allows a low-privileged authenticated attacker with HTTP network access to take over the Contracts component, resulting in high confidentiality, integrity, and availability impact (CVSS 8.8). The flaw requires any valid low-privilege account but no user interaction or elevated rights, and it works against default configurations of the affected versions, so the primary limiting factor is obtaining an authenticated foothold on the EBS instance. No public exploit code has been identified at time of analysis and the CVE is not listed in CISA KEV, though the combination of low privileges, network reach, and full component takeover places it in a high-priority tier rather than the pre-authentication maximum tier.

RemediationAI

No exact fix version is supplied in the available intelligence; the authoritative remediation guidance is the Oracle Security Alert at https://www.oracle.com/security-alerts/cspusep2026.html, which should be consulted for the patch applicable to Oracle E-Business Suite 12.2.14-12.2.15 running the Contracts module. Because the vulnerability requires only a low-privilege authenticated account, prioritize patching alongside controls that shrink the authenticated attack surface: restrict HTTP/HTTPS access to the EBS Contracts endpoints to trusted networks via firewall, reverse-proxy ACLs, or VPN-only access (trade-off: reduces legitimate remote and partner access, requiring re-provisioning of those users); audit and minimize low-privilege accounts that can reach the Contracts module, enforcing least privilege and disabling dormant accounts (trade-off: may disrupt business workflows and requires ongoing identity-governance effort); and monitor Contracts application and database logs for unexpected operations by low-privileged users (trade-off: generates alert volume that needs tuning to avoid false positives). Note that the vendor did not disclose the underlying defect class (CWE: N/A), so compensating controls should be treated as temporary until the vendor patch is applied.

Affected VersionsENISA

Oracle Contracts 12.2.14 ≤12.2.15

Affected Packages

euvd oracle_contracts no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability resides in the Internal Operations component of Oracle Contracts, the contract lifecycle management module of Oracle E-Business Suite (EBS). EBS is Oracle's integrated business application suite, and Contracts is typically exposed to internal or partner users over HTTP/S. The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H describes a remotely reachable, low-complexity issue that requires only a low-privileged authenticated session, no user interaction, and yields complete loss of confidentiality, integrity, and availability within the vulnerable component's scope. The root-cause weakness class is not disclosed (CWE: N/A), consistent with Oracle's practice of withholding technical details in Critical Patch Updates until customers have had time to apply fixes, so the precise coding or configuration defect cannot be confirmed from the available intelligence.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

vuln.today AI 8.8 HIGH

Network HTTP with easy exploitation and low-privilege authentication (PR:L) yielding full takeover (C:H/I:H/A:H) confined to the vulnerable component (S:U); matches vendor vector.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Vulnerability in the Oracle Contracts product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.14-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Contracts. Successful attacks of this vulnerability can result in takeover of Oracle Contracts. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle E-Business Suite Contracts module versions 12.2.14 through 12.2.15 contains a high-severity vulnerability (CVE-2026-83479) that could let a low-privilege user seize control of contract data and processing. Finance, legal, and procurement operations that depend on EBS Contracts could face data exposure, fraud, or downtime if an attacker obtains an EBS foothold. No public exploit identified at time of analysis, and no vendor-released patch identified at time of analysis, so leadership should prioritize immediate exposure reduction and monitoring.

Business Impact: High

Compensating Controls

No vendor-released patch identified at time of analysis; restrict network/HTTP access to Oracle Contracts, enforce least privilege, enable audit logging and monitoring, segment EBS instances, and deploy virtual patching/WAF controls where feasible.

Threat Intelligence Overview

EPSS Score

0.4%

Top 71% exploitable

Prevalence

Medium

Oracle E-Business Suite is widely deployed ERP, but Contracts is a specific module

Data Quality

4 sources

Confidence: Medium

EUVD 🇯🇵JVN

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.