What is the CVSS score of EUVD-2026-79821?

EUVD-2026-79821 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.4%.

Purchasing EUVD-2026-79821

| CVE-2026-87166 HIGH

Improper Access Control (CWE-284)

2026-09-15 secalert_us@oracle.com

GHSA-p9pc-79gm-qww7

Authentication Bypass Oracle Purchasing

8.1

CVSS 3.1 · Vendor: oracle

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Vulnerability Assessment

Weakness

CWE

CWE-284

OWASP Top 10:2025

A01:2025 - Broken Access Control

ASVS 5.0

V8 - Authorization Access control enforcement

MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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 15, 2026

Oracle Purchasing, the procurement module inside Oracle E-Business Suite 12.2.3 through 12.2.15, fails to properly enforce authorization on HTTP-reachable functionality, letting an authenticated low-privileged user read, create, modify, or delete purchasing data far beyond their intended role. The flaw is rated CVSS 8.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N), meaning no user interaction and only a basic valid account are needed, though the attacker must already be authenticated to the EBS instance. No public exploit code and no CISA KEV entry have been reported at time of analysis, so the immediate threat is assessed as targeted rather than mass-exploited.

Affected VersionsENISA

Oracle Purchasing 12.2.3 ≤12.2.15

Affected Packages

euvd oracle_purchasing 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.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 8.1 HIGH

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

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

DescriptionCVE.org

Vulnerability in the Oracle Purchasing product of Oracle E-Business Suite (component: Other issue). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Purchasing. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Purchasing accessible data as well as unauthorized access to critical data or complete access to all Oracle Purchasing accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Threat Intelligence Overview

EPSS Score

0.4%

Top 67% exploitable

Data Quality

5 sources

Confidence: Medium

EUVD 🇯🇵JVN

NVD

CVE.org

EPSS

VulDB

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· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

More in Purchasing

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CVE-2026-87163 HIGH This Week

8.8 Sep 15

Low-privileged attackers holding a valid Oracle E-Business Suite account can take over the Oracle Purchasing module (ver

CVE-2026-70948 HIGH This Week

8.8 Aug 18

Full takeover of Oracle Purchasing within Oracle E-Business Suite is achievable by any low-privileged, network-authentic

CVE-2026-70811 HIGH This Week

8.1 Aug 18

Oracle Purchasing versions 12.2.5 through 12.2.15 within Oracle E-Business Suite expose an authorization bypass flaw in

CVE-2026-62491 HIGH This Week

8.1 Aug 18

Oracle Purchasing (E-Business Suite component: Internal Operations), versions 12.2.3 through 12.2.15, exposes critical d

CVE-2026-87265 HIGH This Week

8.1 Sep 15

Oracle E-Business Suite deployments running Oracle Purchasing 12.2.3 through 12.2.15 expose a flaw in which any authenti

CVE-2026-87168 HIGH This Week

8.1 Sep 15

Unauthorized creation, deletion, modification, and disclosure of data in Oracle Purchasing (Oracle E-Business Suite 12.2

CVE-2026-87167 HIGH This Week

8.1 Sep 15

Oracle E-Business Suite 12.2.11 through 12.2.15 ships a flaw in the G-Invoicing component of Oracle Purchasing that lets

CVE-2021-2262 HIGH This Week

8.1 Apr 22

Vulnerability in the Oracle Purchasing product of Oracle E-Business Suite (component: Endeca). Rated high severity (CVSS

CVE-2026-70798 HIGH This Week

7.8 Aug 18

Oracle Purchasing within E-Business Suite versions 12.2.3 through 12.2.15 exposes a local privilege escalation in the In

CVE-2026-87127 HIGH This Week

7.7 Sep 15

Oracle Purchasing (G-Invoicing component) in Oracle E-Business Suite 12.2.10 through 12.2.15 permits a low-privileged, a

CVE-2026-70947 HIGH This Week

7.5 Aug 18

Unauthenticated HTTP access to Oracle Purchasing (a component of Oracle E-Business Suite versions 12.2.3-12.2.15) enable

CVE-2026-70797 HIGH This Week

7.2 Aug 18

Oracle Purchasing, a procurement module of Oracle E-Business Suite versions 12.2.3 through 12.2.15, exposes a high-sever

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References

Advisories & patches

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-87166 ADVISORY https://vuldb.com/vuln/405306 REF https://www.oracle.com/security-alerts/cspusep2026.html

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