Security readout for executives and security teams
Plain-English summary
Cognex In-Sight OPC Server v5.7.4 (96) and earlier can mishandle untrusted serialized data. A remote attacker could gain powerful system-level command access, but the CVSS vector indicates user interaction is required. Treat exposed or business-critical installations as high priority, especially in operational technology environments.
Executive priority
Prioritize remediation for production or OT-connected systems because compromise could affect confidentiality, integrity, and availability. Do not assume exploitation is occurring without additional evidence, but avoid delaying inventory and vendor-guidance checks.
Technical view
The issue is CWE-502 deserialization of untrusted data in Cognex In-Sight OPC Server. The published CVSS 3.1 score is 8.8 with network attack vector, low complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to environments running Cognex In-Sight OPC Server v5.7.4 (96) or earlier. The bundle does not identify specific internet exposure, deployment patterns, or affected operating systems.
Exploitation context
The source bundle does not report known active exploitation, and CISA KEV status is false. Exploitation is described as remote, low complexity, and unauthenticated, but requiring user interaction. No exploit method is provided here.
Researcher notes
Evidence supports a high-severity CWE-502 issue with remote, unauthenticated reachability and required user interaction. The provided sources do not include patch details, exploit availability, or exploitation telemetry. Validate exposure through asset inventory and version checks.
Mitigation direction
- Inventory Cognex In-Sight OPC Server deployments and record exact versions.
- Prioritize v5.7.4 (96) and earlier for vendor guidance review.
- Check Cognex and CISA advisory guidance for fixed versions or mitigations.
- Restrict access to the OPC Server from untrusted networks.
- Apply compensating monitoring until vendor-directed remediation is complete.
Validation and detection
- Confirm whether Cognex In-Sight OPC Server is installed.
- Verify installed version against v5.7.4 (96) and earlier.
- Review network paths to the OPC Server from user and external networks.
- Check whether vendor advisory remediation has been applied.
- Monitor for unexpected system-level command execution indicators.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-32935 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-224-01CVE 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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.