What’s Vulnerable › Vulnerabilities

CVE-2007-1820

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-04-02 · updated 2026-06-16

Description

Nortel Networks CallPilot and Meridian Mail voicemail systems, when a mailbox has auto logon enabled, allow remote attackers to retrieve or remove messages, or reconfigure the mailbox, by spoofing Calling Number Identification (CNID, aka Caller ID).

Affected products

• Nortel Callpilot: all versions
• Nortel Meridian Mail: all versions

References

• http://osvdb.org/34983
• http://www.kb.cert.org/vuls/id/726548
• http://www.kb.cert.org/vuls/id/AAMN-5N2QFX
• http://osvdb.org/34983
• http://www.kb.cert.org/vuls/id/726548
• http://www.kb.cert.org/vuls/id/AAMN-5N2QFX

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