Security readout for executives and security teams
Plain-English summary
CVE-2021-39432 is a memory-management flaw reported as a double free in diplib v3.0.0. The published CVSS data indicates no confidentiality or integrity impact, but high availability impact. For executives, the main risk is service disruption if affected image-processing functionality handles crafted input.
Executive priority
Treat as a moderate-priority availability issue. Prioritize remediation where DIPlib processes untrusted uploads or supports customer-facing services. Lower urgency is reasonable for internal-only, non-exposed tooling, but incomplete affected metadata warrants inventory confirmation.
Technical view
The record describes diplib v3.0.0 as vulnerable to double free and maps it to CWE-416. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges required, user interaction required, unchanged scope, and availability-only impact. Public references include a GitHub issue and a fixing commit.
Likely exposure
Exposure is likely limited to systems that build, package, or embed DIPlib/diplib v3.0.0 and process externally supplied data. The CVE bundle’s structured affected-product fields are incomplete, so teams should verify actual use through dependency inventories and source references.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV. The CVSS vector suggests exploitation may be possible remotely but requires user interaction. Available evidence supports denial-of-service risk, not data theft or unauthorized modification.
Researcher notes
Evidence is sparse: the CVE description is brief, affected vendor/product fields are n/a, and the actionable technical references are a GitHub issue and commit. Do not assume affected versions beyond diplib v3.0.0 from the supplied bundle without vendor confirmation.
Mitigation direction
- Identify any direct or transitive use of DIPlib/diplib v3.0.0.
- Review the linked GitHub issue and commit for vendor remediation context.
- Upgrade to a vendor-supported release containing the referenced fix, if available.
- Restrict untrusted input paths that invoke affected DIPlib processing.
- Monitor DIPlib project guidance for confirmed fixed versions.
Validation and detection
- Check dependency manifests, lockfiles, containers, and build artifacts for DIPlib/diplib v3.0.0.
- Confirm deployed source or packages include commit 8b9a2670ce66ff2fd5addf592f7825e1f5adb5b5 or later.
- Map all public upload or processing paths that call DIPlib functionality.
- Verify crash monitoring for affected services shows no related availability events.
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-416: 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-2021-39432 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/DIPlib/diplib/issues/80CVE reference
- https://github.com/DIPlib/diplib/commit/8b9a2670ce66ff2fd5addf592f7825e1f5adb5b5CVE reference
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.