CVE-2020-8150
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption...
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- Record
CVE-2020-8150- CVSS 3.1
- 4.1 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 1.9 Low
AV:L/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-310, CWE-311
- Updated
- 2026-11-02
CVE List No score
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- Record
CVE-2020-8150- Weakness
- CWE-310
- Updated
- 2026-11-02
EUVDEUVD-2020-29044 No score
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- Record
EUVD-2020-29044- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2q3r-568x-rqmv
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption...
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- Record
GHSA-2q3r-568x-rqmv- CVSS 3.1
- 4.1 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-311
- Updated
- 2026-11-02
OSV
A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files.
- Record
CVE-2020-8150- CVSS 3.1
- 4.1 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-8150 is a medium vulnerability (CVSS 4.1) in Hackerone Nextcloud Server, published November 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.