Security readout for executives and security teams
Plain-English summary
This flaw can let an unauthenticated network attacker trigger an uncaught exception in affected AVEVA System Platform deployments, causing denial of service. The stated business impact is availability loss, not data theft or tampering.
Executive priority
Treat this as a high-priority availability risk for operational technology environments. It does not indicate confidentiality or integrity compromise, but service disruption in industrial systems can still create operational and safety consequences.
Technical view
CVE-2021-33010 is CWE-248 in AVEVA System Platform versions 2017 through 2020 R2 P01. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges or user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is most relevant where AVEVA System Platform is reachable over networks used for industrial operations or remote administration. The bundle identifies System Platform versions 2017 through 2020 R2 P01 as affected.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not marked CISA KEV. The risk is still material because the CVSS vector indicates unauthenticated network-triggered denial of service.
Researcher notes
Evidence supports an uncaught-exception denial-of-service condition, not remote code execution. The bundle does not include exploit details, proof of active exploitation, or specific patch versions, so validation should remain version- and vendor-bulletin driven.
Mitigation direction
- Inventory AVEVA System Platform deployments and record exact versions.
- Review AVEVA-2021-002 for vendor-approved version-specific remediation.
- Review CISA ICSA-21-180-05 for operational mitigation guidance.
- Reduce network exposure for affected System Platform services where feasible.
- Prioritize remediation for systems supporting time-sensitive industrial operations.
Validation and detection
- Confirm whether installed versions fall between 2017 and 2020 R2 P01.
- Check vendor bulletin status against each deployed build.
- Verify affected services are not exposed beyond required operational networks.
- Review monitoring for crashes, service restarts, or availability degradation.
- Document compensating controls until vendor guidance is fully applied.
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-248: 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-2021-33010 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.
Uncaught Exception
Uncaught Exception represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.