How severe is CVE-2015-4456?

CVE-2015-4456 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2015-4456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4456?

CVE-2015-4456 affects Owncloud Owncloud Desktop Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-4456 published?

CVE-2015-4456 was published on 2015-10-26 and last updated on 2026-06-17.

CVE-2015-4456

CVE-2015-4456 is a low-severity vulnerability in Owncloud Owncloud Desktop Client with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Owncloud Owncloud Desktop Client
Published: 2015-10-26
Last modified: 2026-06-17

Description

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Frequently asked questions

What is CVE-2015-4456?: ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.
How severe is CVE-2015-4456?: CVE-2015-4456 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2015-4456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4456?: CVE-2015-4456 affects Owncloud Owncloud Desktop Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4456 published?: CVE-2015-4456 was published on 2015-10-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:owncloud:owncloud_desktop_client:*:*:*:*:*:*:*:*

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