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CVE Record

CVE-2021-46664: MariaDB through 10.5.9 allows an application crash in sub_select_postjoin_aggr for a NULL value of aggr.

MariaDB through 10.5.9 allows an application crash in sub_select_postjoin_aggr for a NULL value of aggr.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-46664 is a MariaDB crash bug affecting versions through 10.5.9. A crafted or unusual database operation could crash the application/database process, creating availability risk. The source bundle does not provide CVSS scoring, active exploitation evidence, or detailed mitigation instructions.

Executive priority

Prioritize as an availability issue for systems where MariaDB supports customer-facing, revenue, or operational workflows. Escalate if affected databases accept queries from less-trusted users or multi-tenant applications.

Technical view

MariaDB through 10.5.9 can crash in sub_select_postjoin_aggr when aggr is NULL. The described impact is application crash, consistent with denial of service. The provided records do not include CWE, CVSS, exploit status, or a complete affected product matrix beyond MariaDB version scope.

Likely exposure

Exposure is most likely where MariaDB through 10.5.9 is deployed directly, bundled in appliances, or supplied through downstream packages. Risk is higher when untrusted users, tenants, or applications can submit complex SQL to the database.

Exploitation context

The bundle does not cite known active exploitation, and KEV is false. Public references include MariaDB, NetApp, Fedora, and CVE records, but they do not establish exploitation in the wild from the provided evidence.

Researcher notes

The evidence is sparse: no CVSS, CWE, exploit details, or full fixed-version mapping is included. Analysis should stay limited to the documented crash in MariaDB through 10.5.9 and vendor advisories for remediation confirmation.

Mitigation direction

  • Inventory MariaDB instances and identify versions through 10.5.9.
  • Check MariaDB, OS vendor, and appliance vendor guidance for fixed packages.
  • Apply relevant MariaDB or distribution security updates through normal change control.
  • For NetApp environments, review the linked NetApp advisory for product-specific exposure.
  • Restrict database access to trusted applications and users where feasible.

Validation and detection

  • Confirm installed MariaDB versions across servers, containers, and appliances.
  • Compare package versions against MariaDB and distribution advisory guidance.
  • Review database crash logs for unexplained failures in affected deployments.
  • Verify backups and restart procedures for services depending on MariaDB.
  • Track remediation evidence in vulnerability management records.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2021-46664 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.