Security readout for executives and security teams
Plain-English summary
CVE-2021-29564 is a low-severity TensorFlow crash issue. A user who can run TensorFlow code locally with crafted inputs may trigger a null pointer dereference in the EditDistance operation. The documented impact is limited availability loss, not data theft or code execution.
Executive priority
Handle through routine dependency maintenance unless TensorFlow runs on shared systems with untrusted local users. The business risk is service interruption, not confirmed compromise or data exposure.
Technical view
TensorFlow tf.raw_ops.EditDistance had incomplete input parameter validation, allowing a null pointer dereference. The CVSS vector is local, high complexity, low privileges required, no user interaction, unchanged scope, and low availability impact only. Affected ranges include versions before the fixed supported releases listed by TensorFlow.
Likely exposure
Exposure is most likely in environments running affected TensorFlow versions where local users or controlled workloads can supply inputs to EditDistance. This is not described as remotely exploitable or broadly internet-exposed in the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The advisory frames the issue as a local, high-complexity denial-of-service condition requiring TensorFlow execution access.
Researcher notes
The core issue is CWE-476 in edit_distance_op.cc input validation. The provided sources identify the vulnerable operation and fixed release plan, but do not provide evidence of exploitation in the wild or broader product impact.
Mitigation direction
- Upgrade TensorFlow to 2.5.0 or a fixed backport release.
- Use TensorFlow 2.4.2, 2.3.3, 2.2.3, or 2.1.4 where applicable.
- Check current vendor guidance before relying on unsupported TensorFlow branches.
- Restrict who can run arbitrary TensorFlow workloads on shared systems.
Validation and detection
- Inventory deployed TensorFlow package versions across development, training, and inference environments.
- Check for affected version ranges listed in the CVE source bundle.
- Identify workloads that call tf.raw_ops.EditDistance or related EditDistance paths.
- Confirm upgraded environments use fixed TensorFlow versions.
- Review shared compute systems for untrusted local TensorFlow execution access.
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-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-29564 mapping review
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Open ATT&CK lookup- Severity
- Low
- CVSS
- 2.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L11.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2.5LowVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-75f6-78jr-4656CVE reference · x_refsource_CONFIRM
- https://github.com/tensorflow/tensorflow/commit/f4c364a5d6880557f6f5b6eb5cee2c407f0186b3CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.