Security readout for executives and security teams
Plain-English summary
IBM Spectrum Scale versions 5.0.5.0 through 5.1.6.1 have a core-component flaw that could expose user data or allow arbitrary data injection in its communication protocol. The issue is medium severity, but confidentiality impact is high for systems storing sensitive data.
Executive priority
Schedule prompt remediation for affected Spectrum Scale environments that store sensitive data. This is not evidenced as actively exploited, but the confidentiality impact warrants priority above routine patching for critical storage clusters.
Technical view
The CVSS 3.1 vector is AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N, scoring 5.7. Sources describe CWE-200 information disclosure in Spectrum Scale core communications, with possible unauthorized user-data access or protocol data injection. Public details do not define the exact protocol condition.
Likely exposure
Exposure is most relevant where IBM Spectrum Scale 5.0.5.0 through 5.1.6.1 is deployed, especially shared or locally accessible environments. The CVSS local attack vector and high attack complexity reduce broad remote risk, but stored data sensitivity can raise business impact.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. It also does not provide public exploit details. Treat this as a versioned vendor vulnerability requiring remediation validation, not as confirmed actively exploited exposure.
Researcher notes
Public sources identify IBM X-Force ID 191695 and CWE-200. Evidence supports local, high-complexity exploitation with no privileges or user interaction. Available bundle lacks exact patch levels, exploit prerequisites, affected CPEs, and detection indicators, so validation should stay anchored to IBM guidance.
Mitigation direction
- Check IBM advisory for fixed levels and vendor-recommended remediation.
- Inventory Spectrum Scale deployments and identify versions 5.0.5.0 through 5.1.6.1.
- Prioritize systems holding regulated, customer, or business-critical data.
- Limit local access to Spectrum Scale hosts while remediation is pending.
- Monitor IBM X-Force entry for updated technical guidance.
Validation and detection
- Confirm installed Spectrum Scale versions on all relevant clusters.
- Compare each deployment against IBM advisory affected and fixed-version guidance.
- Verify remediation through change records or package/version evidence.
- Review access controls for local users and service accounts.
- Check monitoring for unusual data access around Spectrum Scale hosts.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2020-4927 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N1.44.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.7MediumVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6960571CVE reference · vendor-advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/191695CVE reference · vdb-entry
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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.