CVE-2015-6861

HPE Helion Eucalyptus 3.4.0 through 4.2.0 allows remote authenticated users to bypass an intended AssumeRole permission requirement and assume an IAM role by leveraging a policy setting for a user's account.

Published: 2016-01-05 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-6861 is rated Moderate Risk (49.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.39%). 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-2015-6861

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 2025-03-30 0.95% 0.39% -0.55%
2 2025-03-29 0.39% 0.95% +0.55%
3 2025-03-17 — 0.39% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-6861

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H 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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.6 5.9 [email protected]
4.6 2.0 MEDIUM
AV:N/AC:H/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2015-6861

Affected software / configurations for CVE-2015-6861

Vendor Product Version Raw CPE
eucalyptus eucalyptus 3.4.0 cpe:2.3:a:eucalyptus:eucalyptus:3.4.0:*:*:*:*:*:*:*
eucalyptus eucalyptus 3.4.1 cpe:2.3:a:eucalyptus:eucalyptus:3.4.1:*:*:*:*:*:*:*
eucalyptus eucalyptus 3.4.2 cpe:2.3:a:eucalyptus:eucalyptus:3.4.2:*:*:*:*:*:*:*
eucalyptus eucalyptus 3.4.3 cpe:2.3:a:eucalyptus:eucalyptus:3.4.3:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.0.0 cpe:2.3:a:eucalyptus:eucalyptus:4.0.0:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.0.1 cpe:2.3:a:eucalyptus:eucalyptus:4.0.1:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.0.2 cpe:2.3:a:eucalyptus:eucalyptus:4.0.2:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.1.0 cpe:2.3:a:eucalyptus:eucalyptus:4.1.0:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.1.1 cpe:2.3:a:eucalyptus:eucalyptus:4.1.1:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.1.2 cpe:2.3:a:eucalyptus:eucalyptus:4.1.2:*:*:*:*:*:*:*
eucalyptus eucalyptus 4.2.0 cpe:2.3:a:eucalyptus:eucalyptus:4.2.0:*:*:*:*:*:*:*

References for CVE-2015-6861

cvelogic Threat Intelligence