CVE-2007-6430

CVE-2007-6430 is a medium-severity vulnerability in Asterisk Asterisk Business Edition with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 2% (78th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-287
• Affected product: Asterisk Asterisk Business Edition
• Published: 2007-12-20
• Last modified: 2026-06-16

Description

Asterisk Open Source 1.2.x before 1.2.26 and 1.4.x before 1.4.16, and Business Edition B.x.x before B.2.3.6 and C.x.x before C.1.0-beta8, when using database-based registrations ("realtime") and host-based authentication, does not check the IP address when the username is correct and there is no password, which allows remote attackers to bypass authentication using a valid username.

Frequently asked questions

What is CVE-2007-6430?

Asterisk Open Source 1.2.x before 1.2.26 and 1.4.x before 1.4.16, and Business Edition B.x.x before B.2.3.6 and C.x.x before C.1.0-beta8, when using database-based registrations ("realtime") and host-based authentication, does not check the IP address when the username is correct and there is no password, which allows remote attackers to bypass authentication using a valid username.

How severe is CVE-2007-6430?

CVE-2007-6430 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-6430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6430?

CVE-2007-6430 primarily affects Asterisk Asterisk Business Edition. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-6430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-6430 published?

CVE-2007-6430 was published on 2007-12-20 and last updated on 2026-06-16.

References

• http://downloads.digium.com/pub/security/AST-2007-027.html
• http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html
• http://secunia.com/advisories/28149
• http://secunia.com/advisories/29242
• http://secunia.com/advisories/29456
• http://secunia.com/advisories/29782
• http://security.gentoo.org/glsa/glsa-200804-13.xml
• http://securityreason.com/securityalert/3467
• http://www.debian.org/security/2008/dsa-1525
• http://www.osvdb.org/39519
• http://www.securityfocus.com/archive/1/485287/100/0/threaded
• http://www.securityfocus.com/bid/26928
• http://www.securitytracker.com/id?1019110
• http://www.vupen.com/english/advisories/2007/4260
• https://exchange.xforce.ibmcloud.com/vulnerabilities/39124

Affected products (46)

• cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0beta7:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.0beta1:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.0beta2:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.10:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.11:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.13:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.14:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.15:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.16:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.17:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.18:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.19:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.21:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.22:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.23:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.24:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.2.25:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:asterisk:open_source:1.4.10:*:*:*:*:*:*:*

More vulnerabilities in Asterisk Asterisk Business Edition

• CVE-2008-1390 — Critical (CVSS 9.3): The AsteriskGUI HTTP server in Asterisk Open Source 1.4.x before 1.4.19-rc3 and 1.6.x before 1.6.0-beta6, Business…
• CVE-2008-1332 — High (CVSS 8.8): Unspecified vulnerability in Asterisk Open Source 1.2.x before 1.2.27, 1.4.x before 1.4.18.1 and 1.4.19-rc3; Business…
• CVE-2008-3264 — High (CVSS 7.8): The FWDOWNL firmware-download implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before…
• CVE-2008-1289 — High (CVSS 7.5): Multiple buffer overflows in Asterisk Open Source 1.4.x before 1.4.18.1 and 1.4.19-rc3, Open Source 1.6.x before…
• CVE-2008-1923 — High (CVSS 7.1): The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when…
• CVE-2009-0041 — Medium (CVSS 5.0): IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business…

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• CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
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