What is CVE-2021-43553?

CVE-2021-43553 is a low-severity vulnerability in Osisoft Pi Vision, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2021-11-17.

How severe is CVE-2021-43553?

Low severity. CVSS v3 base score is 3.1 out of 10.

Auth bypass in Osisoft Pi Vision

CVE-2021-43553

PI Vision could disclose information to a user with insufficient privileges for an AF attribute that is the child of another attribute and is configured as a Limits property.

Vulnerability class: Broken Access Control

Published 2021-11-17 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.006 (44.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Osisoft Pi Vision — versions All versions
Osisoft Pi Vision

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

us-cert.cisa.gov/ics/advisories/icsa-21-313-05 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-43553?: CVE-2021-43553 is a low-severity vulnerability in Osisoft Pi Vision, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2021-11-17.
How severe is CVE-2021-43553?: Low severity. CVSS v3 base score is 3.1 out of 10.