CVE-2007-0479

CVE-2007-0479 is a high-severity vulnerability in Cisco Ios Transmission Control Protocol with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: High (CVSS 2.0 base score 7.8)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Ios Transmission Control Protocol
• Published: 2007-01-25
• Last modified: 2026-06-16

Description

Memory leak in the TCP listener in Cisco IOS 9.x, 10.x, 11.x, and 12.x allows remote attackers to cause a denial of service by sending crafted TCP traffic to an IPv4 address on the IOS device.

Frequently asked questions

What is CVE-2007-0479?

Memory leak in the TCP listener in Cisco IOS 9.x, 10.x, 11.x, and 12.x allows remote attackers to cause a denial of service by sending crafted TCP traffic to an IPv4 address on the IOS device.

How severe is CVE-2007-0479?

CVE-2007-0479 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2007-0479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0479?

CVE-2007-0479 primarily affects Cisco Ios Transmission Control Protocol. In total, 253 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-0479 published?

CVE-2007-0479 was published on 2007-01-25 and last updated on 2026-06-16.

References

• http://osvdb.org/32093
• http://secunia.com/advisories/23867
• http://securitytracker.com/id?1017551
• http://www.cisco.com/en/US/products/products_security_advisory09186a00807cb0e4.shtml
• http://www.kb.cert.org/vuls/id/217912
• http://www.securityfocus.com/bid/22208
• http://www.us-cert.gov/cas/techalerts/TA07-024A.html
• http://www.vupen.com/english/advisories/2007/0329
• https://exchange.xforce.ibmcloud.com/vulnerabilities/31716
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5080

Affected products (253)

• cpe:2.3:h:cisco:ios_transmission_control_protocol:12:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0da:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0db:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0dc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0s:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sl:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sp:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0st:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sx:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sy:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0sz:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0t:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0w:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0wc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0wt:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xa:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xb:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xd:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xe:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xf:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xg:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xh:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xi:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xj:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xk:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xl:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xm:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xq:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xr:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xs:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xv:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xw:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1aa:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ax:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ay:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1az:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1cx:*:*:*:*:*:*:*

More vulnerabilities in Cisco Ios Transmission Control Protocol

• CVE-2007-0480 — Critical (CVSS 10.0): Cisco IOS 9.x, 10.x, 11.x, and 12.x and IOS XR 2.0.x, 3.0.x, and 3.2.x allows remote attackers to cause a denial of…
• CVE-2007-2813 — High (CVSS 7.8): Cisco IOS 12.4 and earlier, when using the crypto packages and SSL support is enabled, allows remote attackers to cause…
• CVE-2007-0481 — High (CVSS 7.8): Cisco IOS allows remote attackers to cause a denial of service (crash) via a crafted IPv6 Type 0 Routing header.

All CVEs affecting Cisco Ios Transmission Control Protocol →