Security readout for executives and security teams
Plain-English summary
CVE-2021-44491 is a YottaDB crash issue. Crafted input can trigger a bad size calculation passed to memset, causing a segmentation fault and application crash. The source bundle does not provide CVSS, confirmed exploit activity, or a named fixed version.
Executive priority
Treat this as an availability risk until exposure is confirmed. It is most urgent for business-critical services using affected YottaDB versions with externally influenced input, but evidence is incomplete without CVSS or a named fix.
Technical view
YottaDB through r1.32 and V7.0-000 is affected. The issue is in op_fnj3 in sr_port/op_fnj3.c, where crafted input can make a memset call use an extremely large calculated size, leading to process crash.
Likely exposure
Exposure is most relevant where YottaDB processes untrusted or externally influenced input. The bundle lists YottaDB through r1.32 and V7.0-000 but does not provide CPEs, deployment scenarios, or reachable attack surfaces.
Exploitation context
The source bundle says crafted input can crash the application. It does not cite active exploitation, public weaponization, KEV inclusion, authentication requirements, or whether remote exposure is typical.
Researcher notes
The available record points to a large memset size calculation in op_fnj3. No CWE, CVSS vector, proof of exploitation, or patch reference is provided in the bundle, so validation should focus on version and input reachability.
Mitigation direction
- Inventory YottaDB deployments and versions.
- Check YottaDB vendor guidance for fixed or unaffected releases.
- Reduce untrusted input paths into YottaDB-backed applications.
- Monitor affected systems for unexpected YottaDB process crashes.
- Prioritize upgrade planning for exposed or critical services.
Validation and detection
- Confirm whether YottaDB version is through r1.32 or V7.0-000.
- Map applications that pass external input into YottaDB processing.
- Review logs for segmentation faults or unexplained YottaDB crashes.
- Check the cited GitLab issue for remediation status.
- Verify vendor guidance before declaring remediation complete.
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-2021-44491 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://gitlab.com/YottaDB/DB/YDB/-/issues/828CVE 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.