Security readout for executives and security teams
This flaw can let a remote attacker crash the IOServer OPC Server when the Modbus slave/outstation driver processes malformed network traffic. The main business risk is loss of availability in environments that depend on this OPC server for industrial data exchange. The source bundle does not show confirmed active exploitation. Exposure is most likely in industrial control or operations networks running IOServer OPC Server with OPC Drivers 1.0.20 or earlier and the Modbus slave/outstation driver enabled. Internet-facing or broadly reachable OPC/Modbus services would raise urgency, but the bundle does not provide prevalence data. Prioritize validation in industrial environments where this server supports production monitoring or control workflows. The issue is old but high-impact for availability. If present on reachable systems, reduce exposure quickly and confirm vendor guidance before relying on compensating controls. Mitigation focus: Review CISA advisory ICSA-14-100-01 and IOServer guidance for vendor-supported fixes.; Identify and prioritize any OPC Drivers 1.0.20 or earlier deployments.; Restrict access to affected OPC/Modbus services to trusted operational hosts..
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2014-0777 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.3 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:C
CNA and ADP enrichment extracted from CVE v5
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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.
AV:N/AC:M/Au:N/C:P/I:P/A:C8.68.5Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
8.3HighVector: AV:N/AC:M/Au:N/C:P/I:P/A:C
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-14-100-01CVE reference
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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.