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CVE-2016-4027

17
FAUCET Score

CVE-2016-4027 describes a vulnerability in Open-Xchange OX App Suite before version 7.8.1-rev10, where session cookies were stored regardless of user settings when using non-interactive login methods. This could lead to authentication cookies persisting on shared environments, allowing unauthorized access if a user failed to log out. The vulnerability has a low CVSS score of 3.5, indicating a network-based attack with low complexity, requiring user interaction, and resulting in low confidentiality impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.8.1CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_appsuite:*:rev9:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.5LOW

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.07%
Probability of exploitation in next 30 days
EPSS Percentile
61.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0107 is in the 96th percentile among its peer group of 404 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.1 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/137599/Open-Xchange-App-Suite-7.8.1-Information-Disclosure.html
Third Party AdvisoryVDB Entry
securityfocus.com / archive/1/538732/100/0/threaded
securitytracker.com / id/1036157
Third Party AdvisoryVDB Entry