What is the CVSS score of CVE-2016-6659?

CVE-2016-6659 has a CVSS 3.0 base score of 8.1 (High). CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Cloud Foundry CVE-2016-6659

HIGH

Improper Authentication (CWE-287)

2016-12-23 security_alert@emc.com

Authentication Bypass Cloud Foundry Cloud Foundry Uaa Bosh Cloud Foundry Uaa Cloudfoundry Pivotal Software

8.1

CVSS 3.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-287 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Authentication mechanism validation MITRE ATT&CK 2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.32%.
Exploit ScenarioDerived	A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

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

No patch listed yet 0.3% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

Cloud Foundry before 248; UAA 2.x before 2.7.4.12, 3.x before 3.6.5, and 3.7.x through 3.9.x before 3.9.3; and UAA bosh release (aka uaa-release) before 13.9 for UAA 3.6.5 and before 24 for UAA 3.9.3. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. Cloud Foundry before 248; UAA 2.x before 2.7.4.12, 3.x before 3.6.5, and 3.7.x through 3.9.x before 3.9.3; and UAA bosh release (aka uaa-release) before 13.9 for UAA 3.6.5 and before 24 for UAA 3.9.3 allow attackers to gain privileges by accessing UAA logs and subsequently running a specially crafted application that interacts with a configured SAML provider. Affected products include: Cloudfoundry Cloud Foundry Uaa Bosh, Pivotal Software Cloud Foundry, Pivotal Software Cloud Foundry Uaa. Version information: before 248.

Know when Cloud Foundry gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Cloud Foundry before 248; UAA 2.x before 2.7.4.12, 3.x before 3.6.5, and 3.7.x through 3.9.x before 3.9.3; and UAA bosh release (aka uaa-release) before 13.9 for UAA 3.6.5 and before 24 for UAA 3.9.3 allow attackers to gain privileges by accessing UAA logs and subsequently running a specially crafted application that interacts with a configured SAML provider.

Threat Intelligence Overview

EPSS Score

0.3%

Top 45% exploitable

Data Quality

3 sources

Confidence: Low

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 0.3%

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.

Affected Products (CPE)CVE.org

cpe:2.3:a:cloudfoundry:cloud_foundry_uaa_bosh:*:*:*:*:*:*:*:*

cpe:2.3:a:pivotal_software:cloud_foundry:*:*:*:*:*:*:*:*

cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*

More in Cloud Foundry

View all

CVE-2016-5006 CRITICAL Act Now

9.8 May 02

The Cloud Controller in Cloud Foundry before 239 logs user-provided service objects at creation, which allows attackers

CVE-2016-6637 CRITICAL Act Now

9.6 Sep 30

Multiple cross-site request forgery (CSRF) vulnerabilities in Pivotal Cloud Foundry (PCF) before 242; UAA 2.x before 2.7

CVE-2016-4468 HIGH This Week

8.8 Apr 11

SQL injection vulnerability in Pivotal Cloud Foundry (PCF) before 238; UAA 2.x before 2.7.4.4, 3.x before 3.3.0.2, and 3

CVE-2026-41005 CRITICAL Act Now

9.0 Jun 11

Authentication bypass in Cloud Foundry UAA (User Account and Authentication) versions 2.0.0 through 78.13.0 allows remot

CVE-2016-6651 HIGH This Week

8.8 Sep 30

The UAA /oauth/token endpoint in Pivotal Cloud Foundry (PCF) before 243; UAA 2.x before 2.7.4.8, 3.x before 3.3.0.6, and

CVE-2017-4961 HIGH This Week

8.8 Jun 13

An issue was discovered in Cloud Foundry Foundation BOSH Release 261.x versions prior to 261.3 and all 260.x versions. R

CVE-2019-1003025 HIGH This Week

8.8 Feb 20

A exposure of sensitive information vulnerability exists in Jenkins Cloud Foundry Plugin 2.3.1 and earlier in AbstractCl

CVE-2018-15755 HIGH This Week

8.8 Oct 12

Cloud Foundry CF Networking Release, versions 2.11.0 prior to 2.16.0, contain an internal api endpoint vulnerable to SQL

CVE-2026-22734 HIGH This Week

8.6 Apr 16

Authentication bypass in Cloud Foundry UAA allows remote unauthenticated attackers to obtain access tokens for arbitrary

CVE-2016-3084 HIGH This Week

8.1 May 25

The UAA reset password flow in Cloud Foundry release v236 and earlier versions, UAA release v3.3.0 and earlier versions,

CVE-2018-11083 HIGH This Week

8.1 Oct 05

Cloud Foundry BOSH, versions v264 prior to v264.14.0 and v265 prior to v265.7.0 and v266 prior to v266.8.0 and v267 prio

CVE-2019-11271 HIGH This Week

7.8 Jun 19

Cloud Foundry BOSH 270.x versions prior to v270.1.1, contain a BOSH Director that does not properly redact credentials w

Same weakness CWE-287 – Improper Authentication

View all

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2020-0688 HIGH POC

8.8

CVE-2023-46805 HIGH POC

8.2

CVE-2023-35078 CRITICAL POC

9.8

CVE-2015-1187 CRITICAL POC

9.8

CVE-2024-7593 CRITICAL POC

9.8

CVE-2017-7921 CRITICAL POC

9.8

Same technique Authentication Bypass

View all

CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

ADVISORY https://www.cloudfoundry.org/cve-2016-6659/ REF http://www.securityfocus.com/bid/95085

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back