CVE-2007-2813

CVE-2007-2813 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: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Ios Transmission Control Protocol
• Published: 2007-05-22
• Last modified: 2026-06-16

Description

Cisco IOS 12.4 and earlier, when using the crypto packages and SSL support is enabled, allows remote attackers to cause a denial of service via a malformed (1) ClientHello, (2) ChangeCipherSpec, or (3) Finished message during an SSL session.

Frequently asked questions

What is CVE-2007-2813?

Cisco IOS 12.4 and earlier, when using the crypto packages and SSL support is enabled, allows remote attackers to cause a denial of service via a malformed (1) ClientHello, (2) ChangeCipherSpec, or (3) Finished message during an SSL session.

How severe is CVE-2007-2813?

CVE-2007-2813 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2007-2813 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-2813?

CVE-2007-2813 primarily affects Cisco Ios Transmission Control Protocol. In total, 188 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-2813?

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-2007-2813 published?

CVE-2007-2813 was published on 2007-05-22 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/25361
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080847c49.shtml
• http://www.osvdb.org/35339
• http://www.securityfocus.com/bid/24097
• http://www.securitytracker.com/id?1018094
• http://www.vupen.com/english/advisories/2007/1910
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34432
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34436
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34442
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5745

Affected products (188)

• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0t:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0wc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xe:*:*:*:*:*:*:*
• 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:12.0xk:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xl:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.0xn:*:*:*:*:*:*:*
• 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:12.0xv:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ay:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1cx:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1e:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ea:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1eb:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ec:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ew:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ex:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ey:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1t:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xd:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xf:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xg:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xh:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xi:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xj:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xl:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xm:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xp:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xq:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xt:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1xu:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1yb:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1yc:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1yd:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1ye:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ios_transmission_control_protocol:12.1yf:*:*:*:*:*:*:*

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-2007-0479 — High (CVSS 7.8): 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…
• 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 →