Security readout for executives and security teams
Plain-English summary
This is a low-severity PI Vision information disclosure issue. An authenticated user with limited privileges may see restricted information tied to a child AF attribute configured as a Limits property. The known impact is confidentiality only, with no integrity or availability impact stated.
Executive priority
Treat this as a targeted confidentiality cleanup, not an emergency response item. Prioritize environments where PI Vision exposes sensitive operational data to broad authenticated user groups.
Technical view
CVE-2021-43553 affects OSIsoft PI Vision, listed as all versions. The issue maps to CWE-863 and can disclose information when authorization is insufficient for a child AF attribute configured as a Limits property. CVSS 3.1 is 3.1 with network access, low privileges, high complexity, and low confidentiality impact.
Likely exposure
Exposure is most relevant to organizations running OSIsoft PI Vision with AF attributes using child Limits properties. The source bundle lists all versions as affected but does not provide deployment, configuration, or patch-status detail.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as CISA KEV. Exploitation requires some authenticated access and high attack complexity, with the stated impact limited to information disclosure.
Researcher notes
Evidence is narrow: the provided sources define the condition, affected product, CWE, CVSS vector, and CISA advisory reference. They do not include proof-of-concept details, observed exploitation, or a specific fix in the bundle.
Mitigation direction
- Review CISA ICSA-21-313-05 and vendor guidance for supported remediation.
- Restrict PI Vision access to trusted authenticated users only.
- Review AF attribute permissions, especially child attributes configured as Limits properties.
- Monitor PI Vision access patterns for unusual low-privilege data access.
Validation and detection
- Inventory PI Vision deployments and confirm whether AF Limits properties are used.
- Identify low-privilege roles that can access PI Vision views or AF attributes.
- Review permissions on parent and child AF attributes for inconsistent authorization.
- Check vendor or CISA guidance for fixed versions or configuration mitigations.
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-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCVE-2021-43553 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
- Low
- CVSS
- 3.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
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:H/PR:L/UI:N/S:U/C:L/I:N/A:N1.61.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.1LowVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-21-313-05CVE 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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.