What is CVE-2017-12299?

CVE-2017-12299 is a medium-severity vulnerability in Cisco Firepower Extensible Operating System, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2017-11-16.

How severe is CVE-2017-12299?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Cisco Firepower Extensible Operating System

CVE-2017-12299

A vulnerability exists in the process of creating default IP blocks during device initialization for Cisco ASA Next-Generation Firewall Services that could allow an unauthenticated, remote attacker to send traffic to the local IP address of the device, bypassing any filters that are configured to deny local IP management traffic. The vulnerability is due to an implementation error that exists in the process of creating default IP blocks when the device is initialized, and the way in which those IP blocks interact with user-configured filters for local IP management traffic (for example, SSH to the device). An attacker could exploit this vulnerability by sending traffic to the local IP address of the targeted device. A successful exploit could allow the attacker to connect to the local IP address of the device even when there are filters configured to deny the traffic. Cisco Bug IDs: CSCvd97962.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.2th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Cisco Firepower Extensible Operating System — versions 2.2(1.58), 2.2\(1.58\)
Cisco Asa Next-Generation Firewall Services — versions Cisco ASA Next-Generation Firewall Services

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115… (Vendor Advisory)
www.securityfocus.com/bid/101915 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-12299?: CVE-2017-12299 is a medium-severity vulnerability in Cisco Firepower Extensible Operating System, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2017-11-16.
How severe is CVE-2017-12299?: Medium severity. CVSS v3 base score is 5.3 out of 10.