Vulnerability in Nextcloud Server
CVE-2020-8259
Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the encryption keys.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (53.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Nextcloud Server
- Nextcloud Server — versions Fixed in 20.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/732431 (Exploit, Third Party Advisory, Issue Tracking)
- nextcloud.com/security/advisory/ (Broken Link, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-8259?
- CVE-2020-8259 is a high-severity vulnerability in Nextcloud Server, classified under Insufficiently Protected Credentials. CVSS score: 8.1/10. Published 2020-11-16.
- How severe is CVE-2020-8259?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-8259 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.