Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-5016

21
FAUCET Score

CVE-2016-5016 describes a critical vulnerability in Pivotal Cloud Foundry (PCF) and its User Account and Authentication (UAA) server, where the systems fail to validate the expiration of X.509 certificates. This oversight could allow an attacker to impersonate legitimate services or users using expired certificates, leading to unauthorized access (C:N/I:H/A:N). With a CVSS score of 5.9 (Medium), the vulnerability has a network-based attack vector and high attack complexity, but does not require user interaction or privileges. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 239CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry:*:*:*:*:*:*:*:*
>= 1.6.0, < 1.6.35CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:*:*:*:*:*:*:*:*
>= 1.7.0, < 1.7.13CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:*:*:*:*:*:*:*:*
<= 3.4.1CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
<= 12.2CPE matchmatch criteria
cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 20th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.cloudfoundry.identity:cloudfoundry-identity-serverFixed in: 3.3.0.3
mavenpatch availablevia ghsa
Product: org.cloudfoundry.identity:cloudfoundry-identity-serverFixed in: 3.4.2

Vendor Advisories (1)

mavenGHSA-rc2r-w8jv-vggpmedium

Cloud Foundry vulnerable to Improper Certificate Validation

May 14, 2022

References

github.com / cloudfoundry/cf-release/releases/tag/v240
Release NotesThird Party Advisory
github.com / cloudfoundry/uaa-release/releases/tag/v11.3
Release NotesThird Party Advisory
github.com / cloudfoundry/uaa-release/releases/tag/v12.3
Release NotesThird Party Advisory
github.com / cloudfoundry/uaa/releases/tag/2.7.4.6
Release NotesThird Party Advisory
github.com / cloudfoundry/uaa/releases/tag/3.3.0.3
Release NotesThird Party Advisory
github.com / cloudfoundry/uaa/releases/tag/3.4.2
Release NotesThird Party Advisory
pivotal.io / security/cve-2016-5016
Vendor Advisory