Security readout for executives and security teams
Plain-English summary
CVE-2021-31912 affects JetBrains TeamCity versions before 2020.2.3. The issue could allow account takeover during password reset, which is serious because TeamCity often has access to source code, build secrets, and deployment workflows. The supplied sources do not provide CVSS scoring or active exploitation evidence.
Executive priority
Prioritize remediation where TeamCity supports production builds, stores secrets, or is internet-accessible. The vulnerability concerns account takeover, but evidence is incomplete on severity scoring and exploitation.
Technical view
The public record describes a potential account takeover condition in TeamCity password reset handling before version 2020.2.3. No CWE, CVSS vector, exploit details, or workaround are included in the supplied bundle. Treat affected TeamCity instances as identity and CI/CD control-plane exposure.
Likely exposure
Organizations running JetBrains TeamCity before 2020.2.3 are potentially exposed, especially if password reset functionality is reachable by users or externally accessible.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Public exploit status is not established from the provided evidence.
Researcher notes
The supplied sources are sparse: they identify TeamCity before 2020.2.3 and a potential password-reset account takeover. They do not provide root cause, prerequisites, exploit maturity, or indicators of compromise.
Mitigation direction
- Upgrade TeamCity to version 2020.2.3 or later.
- Review JetBrains security bulletin guidance for current remediation details.
- Restrict TeamCity access to trusted networks where possible.
- Review account recovery and administrator account controls.
Validation and detection
- Inventory all TeamCity servers and record exact versions.
- Flag any TeamCity instance older than 2020.2.3.
- Check whether password reset is enabled and externally reachable.
- Review audit logs for unusual password reset or account changes.
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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-31912 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
- 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/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/CVE 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.