VULNERABILITY INTELLIGENCE

CVE-2018-0138

CVSS score5.3 MEDIUM

EPSS probability1.17%

CISA KEVNot currently listed

Published2018-02-08

Last modified2026-08-11

CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Weakness classification

CWE-693: Protection Mechanism Failure

Primary references

psirt@cisco.com — Third Party Advisory, VDB Entry
psirt@cisco.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory