Security readout for executives and security teams
Plain-English summary
CVE-2021-38467 is a high-severity memory-management flaw in AUVESY Versiondog. A low-privileged user, with some user interaction, may influence memory that the application frees, which can damage integrity or availability. The source bundle does not confirm public exploitation or provide a specific fixed version.
Executive priority
Treat this as a high-priority operational technology software risk where Versiondog is present. The main concern is disruption or unauthorized modification, not data theft. Prioritize inventory, access restriction, and vendor remediation tracking before deployment decisions.
Technical view
A Versiondog function code accepts a user-supplied raw pointer and deallocates it, enabling attacker control over freed memory regions and a use-after-free condition. CVSS 3.1 is 7.3: network attack vector, low complexity, low privileges, user interaction required, no confidentiality impact, high integrity and availability impact.
Likely exposure
Exposure is most relevant where AUVESY Versiondog is deployed and reachable over a network by authenticated low-privileged users. The CVE bundle lists affected versions as all Versiondog versions, but does not provide CPEs or deployment-specific exposure details.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source in the bundle confirms active exploitation. Exploitation is not described as unauthenticated; the CVSS vector requires low privileges and user interaction.
Researcher notes
The evidence is limited to the CVE description, CVSS vector, affected product entry, and CISA advisory reference. Do not assume exploit availability, affected subcomponents, or fixed versions from this bundle alone. The key technical issue is unsafe deallocation of a user-controlled raw pointer leading to use-after-free.
Mitigation direction
- Check the CISA and vendor advisory for supported remediation or fixed releases.
- Inventory all AUVESY Versiondog deployments and record reachable network paths.
- Restrict Versiondog access to trusted users and required management networks.
- Review low-privileged accounts with access to Versiondog.
- Monitor vendor guidance for patch, configuration, or compensating-control updates.
Validation and detection
- Confirm whether AUVESY Versiondog is present in the environment.
- Map Versiondog versions and compare them with vendor advisory guidance.
- Review access controls for low-privileged Versiondog users.
- Check network exposure to Versiondog services.
- Look for vendor or CISA updates referencing CVE-2021-38467.
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-2021-38467 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
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/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:L/UI:R/S:U/C:N/I:H/A:H2.15.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-21-292-01CVE reference · x_refsource_CONFIRM
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.