What’s Vulnerable › Vulnerabilities

CVE-2023-40708: Improper Access Control in OPTO 22 SNAP PAC S1

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-24 · updated 2026-06-17
• Weakness: CWE-1188

Description

The File Transfer Protocol (FTP) port is open by default in the SNAP PAC S1 Firmware version R10.3b. This could allow an adversary to access some device files.

Affected products

• OPTO 22 SNAP PAC S1: r10.3b

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-02
• https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-02

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