A specially crafted configuration file could be used to cause a stack-based buffer overflow condition in the OPCTest.exe, which may allow remote code execution on Opto 22 PAC Project Professional versions prior to R9.4008, PAC Project Basic versions prior to R9.4008, PAC Display Basic versions prior to R9.4g, PAC Display Professional versions prior to R9.4g, OptoOPCServer version R9.4c and prior that were installed by PAC Project installer, versions prior to R9.4008, and OptoDataLink version R9.4d and prior that were installed by PAC Project installer, versions prior to R9.4008. Opto 22 suggests upgrading to the new product version as soon as possible.
Conclusion & alert: CVE-2015-1007 is rated Moderate Risk (62.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.67%). Core evidence: EPSS rose +1.64% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.03% | 2.67% | +1.64% |
| 2 | 2025-09-14 | 0.54% | 1.03% | +0.49% |
| 3 | 2025-03-30 | — | 0.54% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| opto22 | optodatalink | <= r9.4d | cpe:2.3:a:opto22:optodatalink:*:*:*:*:*:*:*:* |
| opto22 | optoopcserver | <= r9.4c | cpe:2.3:a:opto22:optoopcserver:*:*:*:*:*:*:*:* |
| opto22 | pac_display | < r9.4g | cpe:2.3:a:opto22:pac_display:*:*:*:*:basic:*:*:* |
| opto22 | pac_display | < r9.4g | cpe:2.3:a:opto22:pac_display:*:*:*:*:professional:*:*:* |
| opto22 | pac_project | < r9.4008 | cpe:2.3:a:opto22:pac_project:*:*:*:*:basic:*:*:* |
| opto22 | pac_project | < r9.4008 | cpe:2.3:a:opto22:pac_project:*:*:*:*:professional:*:*:* |
| URL | Tags |
|---|---|
| https://ics-cert.us-cert.gov/advisories/ICSA-15-120-01 | Third Party Advisory US Government Resource |