What’s Vulnerable › Vulnerabilities

CVE-2019-20031

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-29 · updated 2026-06-17
• Weakness: CWE-307

Description

NEC UM8000, UM4730 and prior non-InMail voicemail systems with all known software versions may permit an infinite number of login attempts in the telephone user interface (TUI), effectively allowing brute force attacks.

Affected products

• NEC Um4730 Firmware: all versions
• NEC Um8000 Firmware: all versions

References

• https://shadytel.su/files/nec_cve.txt
• https://shadytel.su/files/nec_cve.txt

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