A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass file…

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.

Scores

EPSS (exploitation in 30 days)

1.2% · top 32% of all CVEs (4 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• CWE-693 (opens in a new tab)All about CWE-693 and its CVEs

Affected products

• Cisco Firepower System Software

  • affected Cisco Firepower System Software

References (2)

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fss (opens in a new tab)x_refsource_CONFIRMx_transferred
• 102978 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2018-0138](https://trackcve.app/badge/CVE-2018-0138.svg)](https://trackcve.app/cve/CVE-2018-0138)

Record last updated 2 Dec 2024, 21:08 UTC.