CVE-2007-2813

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

3.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2007-05-22 19:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:40 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.4% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2007-05-22 19:30 UTC

Last modified

2026-06-16 22:40 UTC

Exploit probability

3.4% · EPSS, next 30 days

Record status

Modified

Affected

• Cisco iOS Transmission Control Protocol 12.0t
• Cisco iOS Transmission Control Protocol 12.0wc
• Cisco iOS Transmission Control Protocol 12.0xe
• Cisco iOS Transmission Control Protocol 12.0xh
• Cisco iOS Transmission Control Protocol 12.0xi
• Cisco iOS Transmission Control Protocol 12.0xk
• Cisco iOS Transmission Control Protocol 12.0xl
• Cisco iOS Transmission Control Protocol 12.0xn

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2007-2813.md and follow it. Check whether this project is affected by CVE-2007-2813. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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