Security readout for executives and security teams
Plain-English summary
CVE-2021-33648 is an out-of-bounds read in MindSpore shape inference logic. Specially shaped model/operator input with a zero-sized shape can make affected code read outside heap-allocated shape buffers. Business urgency depends on whether your environments use affected MindSpore versions and process untrusted or externally supplied models or tensor shapes.
Executive priority
Prioritize this for ML platforms using affected MindSpore versions, especially if they process untrusted model inputs. If MindSpore is absent or only trusted offline models are used, urgency is lower, but version inventory should still be completed.
Technical view
Affected openEuler:mindspore versions are listed as >=1.1.0 and <1.3.0. The flaw is CWE-125 in inference shape handling for Affine, Concat, MatMul, ArgMinMax, EmbeddingLookup, and Gather operators when input shape size is 0. Public scoring is not provided in the bundle.
Likely exposure
Exposure is likely limited to systems running affected MindSpore/openEuler MindSpore packages, especially ML services that load third-party models, accept user-influenced tensor metadata, or run automated model pipelines.
Exploitation context
The source bundle does not show CISA KEV listing, public exploitation, exploit code, or in-the-wild use. Treat exploitation status as unknown, not active. The issue appears input-triggered during shape inference rather than a general network-facing flaw.
Researcher notes
Evidence is sparse: no CVSS, no patch details beyond the affected version range, and no exploitation signal in the provided bundle. Focus validation on dependency presence, exact versioning, and whether attacker-controlled shapes can reach the listed operators.
Mitigation direction
- Inventory MindSpore/openEuler MindSpore versions across ML hosts and build images.
- Upgrade affected versions to a vendor-supported version outside >=1.1.0,<1.3.0.
- Review MindSpore MSSA-2021-007 before applying package or runtime changes.
- Restrict untrusted model, operator, and tensor-shape inputs where feasible.
- Monitor vendor advisories for any updated severity, fixes, or workarounds.
Validation and detection
- Confirm no deployed MindSpore package version falls within >=1.1.0,<1.3.0.
- Check ML services for workflows that process externally supplied models or tensors.
- Review crash, sanitizer, or runtime logs around listed operators.
- Verify dependency manifests and container images after remediation.
- Document any accepted exposure where upgrade is deferred.
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.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-33648 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://gitee.com/mindspore/community/blob/master/security/security_advisory_list/mssa-2021-007_en.mdCVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.