HOMEVULNERABILITIESCVE-2016-8520
HIGH

CVE-2016-8520

CWE-275Published: February 15, 2018· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

HPE Helion Eucalyptus v4.3.0 and earlier does not correctly check IAM user's permissions for accessing versioned objects and ACLs. In some cases, authenticated users with S3 permissions could also access versioned data.

NVD Source

Technical Analysis

CVE-2016-8520 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

eucalyptus1 product(s)
eucalyptus
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/95369
ADVISORYhttps://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782
ADVISORYhttp://www.securityfocus.com/bid/95369
ADVISORYhttps://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782

All References (4)

→
http://www.securityfocus.com/bid/95369Third Party Advisory · VDB Entry
→
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782Vendor Advisory
→
http://www.securityfocus.com/bid/95369Third Party Advisory · VDB Entry
→
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782Vendor Advisory

Quick Facts

CVE IDCVE-2016-8520
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-275
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 15, 2018

Related CVEs (CWE-275)

CVE-2017-6513
9.9
CVE-2020-14496
9.8
CVE-2017-16887
9.8
CVE-2017-17060
9.8
CVE-2018-15379
9.8
CVE-2023-3759
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-8520 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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