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CVE-2015-4456

12
FAUCET Score

CVE-2015-4456 describes a vulnerability in ownCloud Desktop Client versions prior to 1.8.2, where improper handling of SSL certificate errors allows man-in-the-middle (MitM) attackers to bypass user distrust decisions. This medium-complexity attack, rated with a CVSS score of 2.6, could lead to sensitive information disclosure if an attacker leverages a self-signed certificate. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.8.1CPE matchmatch criteria
cpe:2.3:a:owncloud:owncloud_desktop_client:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.6LOW

AV:N/AC:H/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 34th percentile among its peer group of 1,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 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

github.com / owncloud/client/issues/3283
owncloud.org / security/advisory
Vendor Advisory
debian.org / security/2015/dsa-3363
securityfocus.com / bid/75354