CVE-2016-5016

Pivotal Cloud Foundry 239 and earlier, UAA (aka User Account and Authentication Server) 3.4.1 and earlier, UAA release 12.2 and earlier, PCF (aka Pivotal Cloud Foundry) Elastic Runtime 1.6.x before 1.6.35, and PCF Elastic Runtime 1.7.x before 1.7.13 does not validate if a certificate is expired.

Published: 2017-04-24 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-5016 is rated Moderate Risk (45.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.03%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-5016

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.28% 1.03% +0.75%
2 2025-03-30 0.24% 0.28% +0.03%
3 2025-03-29 — 0.24% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-5016

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2016-5016

GitHub Security Advisory for CVE-2016-5016

GHSA-rc2r-w8jv-vggp · Severity: medium · Ecosystem: maven — Cloud Foundry vulnerable to Improper Certificate Validation

Affected software / configurations for CVE-2016-5016

Vendor Product Version Raw CPE
pivotal_software cloud_foundry <= 239 cpe:2.3:a:pivotal_software:cloud_foundry:*:*:*:*:*:*:*:*
pivotal_software cloud_foundry_elastic_runtime >= 1.6.0, < 1.6.35 cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:*:*:*:*:*:*:*:*
pivotal_software cloud_foundry_elastic_runtime >= 1.7.0, < 1.7.13 cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:*:*:*:*:*:*:*:*
pivotal_software cloud_foundry_uaa <= 3.4.1 cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
pivotal_software cloud_foundry_uaa-release <= 12.2 cpe:2.3:a:pivotal_software:cloud_foundry_uaa-release:*:*:*:*:*:*:*:*

References for CVE-2016-5016

cvelogic Threat Intelligence