What’s Vulnerable › Vulnerabilities

CVE-2025-3659: Improper authentication handling for Digi PortServer TS; Digi One SP, SP IA, IA; Digi One IAP

• Severity: critical (CVSS 9.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-12 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper authentication handling was identified in a set of HTTP POST requests affecting the following product families: * Digi PortServer TS - prior to and including 82000747_AA, build date 06/17/2022 * Digi One SP/Digi One SP IA/Digi One IA - prior to and including 82000774_Z, build date 10/19/2020 * Digi One IAP – prior to and including 82000770 Z, build date 10/19/2020 A specially crafted POST request to the device’s web interface may allow an unauthenticated attacker to modify configuration settings.

Affected products

• Digi International Digi One IAP: through 82000770 Z
• Digi International Digi One SP/Digi One SP IA/Digi One IA: through 82000774_Z
• Digi International Digi PortServer TS: through 82000747_AA

References

• https://hub.digi.com/support/products/infrastructure-management/digi-one-iap-haz/
• https://hub.digi.com/support/products/infrastructure-management/digi-one-sp-ia/
• https://hub.digi.com/support/products/infrastructure-management/digi-portserver-ts/
• https://www.digi.com/getattachment/Resources/Security/Alerts/Improper-authentication-handling-for-Digi-PortServ/improper-authentication-handling.pdf

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