CVE-2007-5583: n/a vulnerability

CVE-2007-5583: Cisco IP Phone 7940 with firmware P0S3-08-7-00 allows remote attackers to cause a denial of service ("486 B...

Cisco IP Phone 7940 with firmware P0S3-08-7-00 allows remote attackers to cause a denial of service ("486 Busy" responses or device reboot) via a sequence of SIP INVITE transactions in which the Request-URI lacks a user name, a different vulnerability than CVE-2007-4459.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 15:39 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old denial-of-service issue affecting Cisco IP Phone 7940 firmware P0S3-08-7-00. A remote SIP caller could make the phone return busy responses or reboot, disrupting calls for that handset. The sources do not show current active exploitation or a confirmed vendor fix. Exposure appears limited to legacy Cisco IP Phone 7940 devices running firmware P0S3-08-7-00, especially if SIP signaling can reach them from untrusted networks or uncontrolled VoIP paths. Treat as a targeted availability risk for legacy voice endpoints. Prioritize if these phones support business-critical call flows or remain reachable outside trusted VoIP infrastructure. Mitigation focus: Inventory Cisco 7940 phones and confirm firmware versions.; Check Cisco guidance for fixed firmware or replacement recommendations.; Restrict SIP signaling reachability to trusted call-control infrastructure..

Prepared: Jun 28, 2026, 19:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 18, 2007, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
4692CVE reference · exploit, x_refsource_EXPLOIT-DB
cisco-ipphone-invite-dos(38853)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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