Security readout for executives and security teams
Plain-English summary
Some Lenovo System x management firmware could place the IMM2 web server private key inside support log files. If those logs are accessed or shared outside trusted channels, the key could expose management-plane HTTPS trust and enable impersonation or decryption risks. The issue is medium severity because exploitation requires high privileges.
Executive priority
Prioritize this for environments with Lenovo System x still in service, especially where support logs are routinely collected or shared. Treat it as a management-plane secrecy issue, not a broad unauthenticated internet exploit.
Technical view
CVE-2019-6157 affects Lenovo System x IMM2 firmware. FFDC support log generation includes the web server private key in the log file. CVSS 3.0 is 6.5 with network attack vector, low complexity, high privileges required, and high confidentiality and integrity impact. Affected versions are described only as various firmware versions.
Likely exposure
Exposure is likely limited to Lenovo System x servers using IMM2 firmware and environments where privileged administrators generate, retrieve, store, or share FFDC logs.
Exploitation context
The supplied sources do not report active exploitation, and the CVE is not marked KEV. The main risk is mishandling of generated support logs containing a private key. High privileges are required per the CVSS vector.
Researcher notes
The public bundle does not enumerate exact firmware builds, affected models, or fixed versions. Analysis should anchor on Lenovo LEN-25667 and local asset inventory. Avoid assuming exploitability beyond privileged access to generate or obtain affected FFDC logs.
Mitigation direction
- Identify Lenovo System x servers using IMM2 firmware.
- Review Lenovo advisory LEN-25667 for affected firmware and vendor remediation.
- Apply vendor-supported firmware updates or guidance where applicable.
- Restrict IMM2 access to trusted administrators and management networks.
- Handle FFDC and support logs as sensitive key material.
Validation and detection
- Inventory System x assets and IMM2 firmware versions.
- Check whether FFDC logs have been generated or exported.
- Review log storage, ticketing, and support-sharing locations for exposed FFDC files.
- Confirm Lenovo advisory applicability for each discovered firmware version.
- Verify administrative access controls around IMM2 management interfaces.
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.
CVE-2019-6157 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
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.lenovo.com/solutions/LEN-25667CVE 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.