How severe is CVE-2017-8777?

CVE-2017-8777 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-8777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8777?

CVE-2017-8777 affects Open-xchange Ox Cloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-8777 published?

CVE-2017-8777 was published on 2019-05-22 and last updated on 2026-06-17.

CVE-2017-8777

CVE-2017-8777 is a high-severity vulnerability in Open-xchange Ox Cloud with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Open-xchange Ox Cloud
Published: 2019-05-22
Last modified: 2026-06-17

Description

Open-Xchange GmbH OX Cloud Plugins 1.4.0 and earlier is affected by: Missing Authorization.

Frequently asked questions

What is CVE-2017-8777?: Open-Xchange GmbH OX Cloud Plugins 1.4.0 and earlier is affected by: Missing Authorization.
How severe is CVE-2017-8777?: CVE-2017-8777 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-8777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8777?: CVE-2017-8777 affects Open-xchange Ox Cloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-8777 published?: CVE-2017-8777 was published on 2019-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-xchange:ox_cloud:*:*:*:*:*:*:*:*

Other CWE-285 (Improper Authorization) vulnerabilities

CVE-2025-65041 — Critical (CVSS 10.0): Improper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.
CVE-2023-33189 — Critical (CVSS 10.0): Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization…
CVE-2022-2595 — Critical (CVSS 10.0): Improper Authorization in GitHub repository kromitgmbh/titra prior to 0.79.1.
CVE-2021-28799 — Critical (CVSS 10.0): An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If…
CVE-2026-34048 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-5412 — Critical (CVSS 9.9): In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated…

Browse all CWE-285 (Improper Authorization) vulnerabilities →