Security readout for executives and security teams
Plain-English summary
JetBrains YouTrack versions before 2021.2.16363 used an insecure pseudo-random number generator. The public record does not explain which security decisions depended on that randomness, so business impact cannot be precisely ranked from the provided sources.
Executive priority
Treat this as a targeted hygiene item for any YouTrack environment, not an emergency unless older exposed instances exist. The lack of impact detail limits urgency assessment, but upgrading past the fixed boundary is prudent.
Technical view
CVE-2021-37553 is an insecure PRNG issue in JetBrains YouTrack before 2021.2.16363. The supplied sources provide no CVSS score, CWE mapping, affected CPEs, attack prerequisites, or impact details beyond the vulnerable version boundary.
Likely exposure
Exposure is limited to organizations running JetBrains YouTrack versions earlier than 2021.2.16363. The sources do not identify affected hosting models, configurations, or reachable attack surfaces.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked KEV. No public exploit status or weaponized technique is established by the provided evidence.
Researcher notes
The public data is sparse. Analysis should focus on determining how YouTrack used the insecure PRNG and whether it influenced tokens, identifiers, secrets, or session-related values. Do not assume those impacts without vendor or code evidence.
Mitigation direction
- Upgrade YouTrack to version 2021.2.16363 or later.
- Review the JetBrains security bulletin for any deployment-specific update guidance.
- If upgrade is delayed, reduce external exposure to YouTrack where operationally feasible.
- Monitor JetBrains advisories for added impact or remediation details.
Validation and detection
- Inventory all YouTrack instances and record their exact versions.
- Confirm no production instance is older than 2021.2.16363.
- Check change records for completed YouTrack upgrade deployment.
- Review exposed YouTrack endpoints and access controls after remediation.
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-2021-37553 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/blog/2021/08/05/jetbrains-security-bulletin-q2-2021/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.