CVE-2018-0157

Name: CVE-2018-0157
Creator: NVD / NIST
Published: 2018-03-28T22:29:00.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 2.74%

Last modified Jun 17, 2026

CVE-2018-0157 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. EPSS estimates a 2.74% chance of exploitation in the next 30 days.

Description

A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending fragmented IP Version 4 or IP Version 6 packets through an affected device. An exploit could allow the attacker to cause the device to crash, resulting in a denial of service (DoS) condition. The following releases of Cisco IOS XE Software are vulnerable: Everest-16.4.1, Everest-16.4.2, Everest-16.5.1, Everest-16.5.1b, Everest-16.6.1, Everest-16.6.1a. Cisco Bug IDs: CSCvf60296.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability

2.74%

84.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-19

Affected Software

Vendor	Product	Versions
Cisco	Ios Xe	16.4.1
Cisco	Ios Xe	16.4.2
Cisco	Ios Xe	16.5.1
Cisco	Ios Xe	16.5.1b
Cisco	Ios Xe	16.6.1
Cisco	Ios Xe	16.6.1a

References

http://www.securityfocus.com/bid/103561Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040593Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-fwipVendor Advisory
http://www.securityfocus.com/bid/103561Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040593Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-fwipVendor Advisory

Timeline

Published: Mar 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0157?

How severe is CVE-2018-0157?

CVE-2018-0157 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 2.74% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0157?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0157?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST