Security readout for executives and security teams
Plain-English summary
This CVE describes a JetBrains TeamCity issue where the Guest user could view audit records before version 2020.1.5. Audit records may reveal operational activity, users, and security-relevant changes. The public bundle does not provide a CVSS score, exploitation evidence, or detailed impact scope.
Executive priority
Prioritize remediation for internet-accessible or broadly reachable TeamCity systems. Business urgency is moderate because audit records can expose sensitive operational context, but the supplied sources do not show active exploitation or severe technical impact.
Technical view
CVE-2020-27628 is an access-control exposure in JetBrains TeamCity before 2020.1.5. The stated behavior is that the Guest user had access to audit records. Sources do not identify affected configurations beyond the version boundary, assign CWE/CVSS, or describe exploit prerequisites beyond Guest access.
Likely exposure
Organizations running JetBrains TeamCity versions before 2020.1.5 may be exposed, especially if Guest access is enabled or reachable by untrusted users. The provided affected-product metadata is incomplete, so confirm against installed TeamCity versions and vendor advisories.
Exploitation context
The bundle does not cite active exploitation, public exploit activity, or KEV listing. Treat this as a potential information disclosure and access-control issue rather than a proven exploited vulnerability based on the supplied evidence.
Researcher notes
Evidence is sparse: no CVSS, CWE, exploit status, or detailed affected configuration is provided. The strongest source-grounded facts are the product, version boundary, and Guest access to audit records. Avoid expanding impact beyond audit-record exposure without vendor detail.
Mitigation direction
- Upgrade JetBrains TeamCity to 2020.1.5 or later where applicable.
- Review JetBrains security bulletin guidance for the exact fixed version and applicability.
- Disable Guest access if it is not required for business workflows.
- Restrict TeamCity access to trusted networks and authenticated users.
- Review audit-record visibility permissions after remediation.
Validation and detection
- Inventory all TeamCity instances and record their exact versions.
- Check whether any instance is older than 2020.1.5.
- Confirm whether Guest access is enabled on each instance.
- Verify Guest users cannot access audit records after remediation.
- Review TeamCity logs for unexpected Guest access to audit-related areas.
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
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CVE-2020-27628 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
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 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://blog.jetbrains.com/CVE reference · x_refsource_MISC
- https://blog.jetbrains.com/2020/11/16/jetbrains-security-bulletin-q3-2020/CVE reference · x_refsource_CONFIRM
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.