CVE-2003-1109: n/a vulnerability

CVE-2003-1109: The Session Initiation Protocol (SIP) implementation in multiple Cisco products including IP Phone models 7...

The Session Initiation Protocol (SIP) implementation in multiple Cisco products including IP Phone models 7940 and 7960, IOS versions in the 12.2 train, and Secure PIX 5.2.9 to 6.2.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 02:12 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Cisco SIP handling flaw where specially crafted call setup traffic could crash affected voice or network devices and may allow code execution. Business urgency depends on whether legacy Cisco IP phones, IOS 12.2 systems, or Secure PIX versions still exist and can receive SIP traffic. Exposure is most likely in legacy Cisco voice, firewall, or router environments where SIP is enabled or reachable. Modern environments are only affected if these older product versions remain deployed or unsegmented. Prioritize if legacy Cisco SIP-capable assets remain in production, especially on perimeter or voice networks. If no affected legacy devices exist, no urgent action is indicated beyond documentation. Mitigation focus: Inventory Cisco IP phones, IOS, and PIX systems for affected versions.; Review Cisco advisory for fixed software, workarounds, and product-specific guidance.; Restrict SIP traffic to trusted voice infrastructure where operationally possible..

Prepared: Jun 29, 2026, 23:41 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

Conservative CVE-to-ATT&CK context

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Execution behavior lookup

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CVE-2003-1109 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 11, 2005, 05:00 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

2Source 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
sip-invite(11379)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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