Security readout for executives and security teams
This issue concerns Nextcloud Server encryption key handling. In version 19.0.1, an attacker could replace a public key and later use that position to decrypt protected server-side encryption keys. The sources identify Nextcloud Server and say it was fixed in 20.0.0, but provide no CVSS score or confirmed exploitation. Exposure is likely limited to Nextcloud Server deployments using affected server-side encryption behavior around version 19.0.1. The bundle does not establish affected version ranges beyond the fixed version statement. Prioritize confirmation if Nextcloud stored sensitive regulated or customer data with server-side encryption enabled. Urgency depends on deployment presence because active exploitation is not confirmed in the supplied sources. Mitigation focus: Upgrade Nextcloud Server to 20.0.0 or later where applicable.; Review Nextcloud advisory NC-SA-2020-040 for vendor-specific remediation details.; Assess whether server-side encryption was enabled on affected deployments..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-522: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-8152 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://hackerone.com/reports/743505CVE reference · x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-040CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Insufficiently Protected Credentials
Insufficiently Protected Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.