Security readout for executives and security teams
Plain-English summary
This vulnerability affects older Opto 22 PAC Project and related industrial software. A vulnerable installed file can trigger a buffer overflow and may allow remote code execution on the target system. For operational technology environments, treat this as high priority if affected versions remain in use.
Executive priority
Prioritize remediation where affected Opto 22 software supports production or safety-sensitive operations. The risk is remote code execution, but public evidence provided here does not confirm active exploitation.
Technical view
The CVE describes a vulnerable file installed by PAC Project installer versions before R9.4006. A heap-based buffer overflow is reported, while metadata lists CWE-121. Affected products include PAC Project, PAC Display, OptoOPCServer, and OptoDataLink versions below specified fixed releases.
Likely exposure
Exposure is likely on engineering workstations, HMI/SCADA support systems, or servers running the affected Opto 22 software versions. Confirm especially systems with PAC Project installer versions before R9.4006 or bundled OptoDataLink deployments.
Exploitation context
The provided sources do not show known active exploitation, and the CVE is not marked KEV. The impact is still serious because the described outcome is remote code execution on the target system.
Researcher notes
Evidence is limited to the CVE description and advisory reference. The vulnerable file is not named in the bundle, and no CVSS vector is provided. Note the mismatch between heap-based wording and CWE-121 metadata.
Mitigation direction
- Upgrade PAC Project Professional and Basic to R9.4006 or later.
- Upgrade PAC Display Basic and Professional to R9.4f or later.
- Upgrade OptoOPCServer to R9.4c or later.
- Review OptoDataLink installations from PAC Project installer and upgrade per Opto 22 guidance.
- Restrict access to affected OT systems until upgrades are confirmed.
Validation and detection
- Inventory installed Opto 22 PAC Project, PAC Display, OptoOPCServer, and OptoDataLink versions.
- Confirm whether OptoDataLink was installed by a vulnerable PAC Project installer.
- Verify upgraded versions meet or exceed the fixed releases named in the CVE.
- Check OT asset management records for legacy engineering workstations.
- Document any systems that cannot be upgraded and track compensating controls.
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-121: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2015-1006 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://ics-cert.us-cert.gov/advisories/ICSA-15-120-01CVE 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.