What’s Vulnerable › Vulnerabilities

CVE-2023-40707: Weak password requirements in OPTO 22 SNAP PAC S1 Built-in Web Server

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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-521

Description

There are no requirements for setting a complex password in the built-in web server of the SNAP PAC S1 Firmware version R10.3b, which could allow for a successful brute force attack if users don't set up complex credentials.

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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