CVE-2017-6632

What it is

A vulnerability in the logging configuration of Secure Sockets Layer (SSL) policies for Cisco FirePOWER System Software 5.3.0 through 6.2.2 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to high consumption of system resources. The vulnerability is due to the logging of certain TCP packets by the affected software. An attacker could exploit this vulnerability by sending a flood of crafted TCP packets to an affected device. A successful exploit could allow the attacker to cause a DoS condition. The success of an exploit is dependent on how an administrator has configured logging for SSL policies for a device. This vulnerability affects Cisco FirePOWER System Software that is configured to log connections by using SSL policy default actions. Cisco Bug IDs: CSCvd07072.

At a glance

Exploitability

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

Exploit odds

2.4% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2017-05-22 01:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-08-11 19:33 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.4% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2017-05-22 01:29 UTC

Last modified

2026-08-11 19:33 UTC

Exploit probability

2.4% · EPSS, next 30 days

Weakness

CWE-399

Record status

Modified

Affected

• Cisco Firepower Threat Defense 6.2_base
• Cisco Secure Firewall Threat Defense 5.3.0
• Cisco Secure Firewall Threat Defense 5.4.0
• Cisco Secure Firewall Threat Defense 6.0.0
• Cisco Secure Firewall Threat Defense 6.0.1
• Cisco Secure Firewall Threat Defense 6.0.1.3
• Cisco Secure Firewall Threat Defense 6.1.0
• Cisco Secure Firewall Threat Defense 6.1.0.2

Attack profile CVSS 3.0 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-6632.md and follow it. Check whether this project is affected by CVE-2017-6632. 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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