What is CVE-2021-32935?

CVE-2021-32935 is a high-severity vulnerability in Cognex In-Sight Opc Server, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2022-05-23.

How severe is CVE-2021-32935?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Cognex In-Sight Opc Server

CVE-2021-32935

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.

Vulnerability class: Insecure Deserialization

Published 2022-05-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.019 · change: +0.000

Affected products

Cognex In-Sight Opc Server — versions All
Cognex In-Sight Opc Server

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.cisa.gov/uscert/ics/advisories/icsa-21-224-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-32935?: CVE-2021-32935 is a high-severity vulnerability in Cognex In-Sight Opc Server, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2022-05-23.
How severe is CVE-2021-32935?: High severity. CVSS v3 base score is 8.8 out of 10.