Security readout for executives and security teams
Plain-English summary
AVEVA System Platform may accept data without properly verifying its cryptographic signature. In an industrial environment, that can undermine trust in system data and could affect confidentiality, integrity, and availability if a highly privileged attacker can reach the system.
Executive priority
Treat this as high priority where AVEVA System Platform supports production operations. The privilege requirement lowers broad internet-scale risk, but compromise of trusted OT administrators or services could create serious operational impact.
Technical view
CVE-2021-32977 is a CWE-347 improper cryptographic signature verification issue in AVEVA System Platform versions 2017 through 2020 R2 P01. CVSS 3.1 is 7.2: network-reachable, low complexity, high privileges required, no user interaction, with high impact across confidentiality, integrity, and availability.
Likely exposure
Likely exposure is limited to organizations running affected AVEVA System Platform versions, especially industrial or operational technology environments where privileged users or services can access the platform over a network.
Exploitation context
The provided bundle does not show CISA KEV listing or active exploitation. The CVSS vector requires high privileges, so this is most concerning after credential compromise, insider misuse, or excessive privileged access within OT networks.
Researcher notes
Evidence supports signature-verification weakness, high CVSS impact, and high privileges required. The prompt bundle does not include exploit details, proof of exploitation, or specific fixed versions, so remediation should be tied to AVEVA and CISA advisory guidance.
Mitigation direction
- Inventory AVEVA System Platform deployments and confirm exact versions.
- Check AVEVA and CISA guidance for supported updates or vendor mitigations.
- Restrict network access to System Platform management and service interfaces.
- Reduce and monitor high-privilege accounts with access to affected systems.
- Prioritize remediation in production OT environments with weak segmentation.
Validation and detection
- Compare installed versions against 2017 through 2020 R2 P01 affected range.
- Confirm whether vendor-recommended updates or mitigations are applied.
- Review privileged access paths to affected AVEVA systems.
- Verify OT network segmentation limits access to required hosts only.
- Check change records for unexpected configuration or data integrity events.
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-347: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2021-32977 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-180-05CVE reference · x_refsource_CONFIRM
- https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AVEVA-2021-002.pdfCVE reference · x_refsource_CONFIRM
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.
Improper Verification of Cryptographic Signature
Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.