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

> Remote attackers can exploit untrusted data deserialization in Cognex In-Sight OPC Server to execute system-level commands and escalate privileges.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 23 May 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-wjh3-6952-cjvw

## What is CVE-2021-32935?

CVE-2021-32935 is a high-severity unsafe deserialization vulnerability in Cognex In-Sight OPC Server, published on 23 May 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2021-32935?

It affects 1 product.


Products: Cognex In-Sight Opc Server.

## How do I fix CVE-2021-32935?

No fix has been published for CVE-2021-32935 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32935 being exploited?

There is no known exploitation of CVE-2021-32935 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32935 and fix it if it is affected.

What it is: CVE-2021-32935 is a high-severity unsafe deserialization vulnerability in Cognex In-Sight OPC Server, published on 23 May 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-32935 in the wild and no public exploit code.

Affected product: Cognex In-Sight OPC Server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-32935/ (Markdown: https://insights.sbomify.com/CVE-2021-32935/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32935
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32935
- OSV: https://osv.dev/vulnerability/CVE-2021-32935

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32935/
Summaries are generated and may contain mistakes; the official description above is the record.