CVE-2018-0138

Name: CVE-2018-0138
Creator: NVD / NIST
Published: 2018-02-08T07:29:00.977+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.19%

Last modified Jun 17, 2026

CVE-2018-0138 is a vulnerability of currently unknown severity. A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass file policies that are configured to block files transmitted to an affected device via the BitTorrent protocol. The vulnerability exists because the affected software does not detect BitTorrent handshake messages correctly. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass file policies that are configured to block files transmitted to an affected device via the BitTorrent protocol. The vulnerability exists because the affected software does not detect BitTorrent handshake messages correctly. An attacker could exploit this vulnerability by sending a crafted BitTorrent connection request to an affected device. A successful exploit could allow the attacker to bypass file policies that are configured to block files transmitted to the affected device via the BitTorrent protocol. Cisco Bug IDs: CSCve26946.

Metrics

EPSS Probability

1.19%

63.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Firepower Threat Defense	6.1.0
Cisco	Firepower Threat Defense	6.2.0
Cisco	Firepower Threat Defense	6.2.2
Cisco	Firepower Threat Defense	6.2.3

References

http://www.securityfocus.com/bid/102978Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fssVendor Advisory
http://www.securityfocus.com/bid/102978Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fssVendor Advisory

Timeline

Published: Feb 8, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0138?

How severe is CVE-2018-0138?

Severity scoring for CVE-2018-0138 is pending analysis. The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0138?

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-2018-0138?

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

Scan your code now

Source: NVD / NIST