TI-2018-00111 Aliases CVE-2018-0138 GHSA-5qfr-j674-96hc

Protection mechanism failure in Cisco Firepower System Software

LOW 32CWE-693Published 2018-02-08 · Updated 2024-12-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-693.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01173 67th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Cisco Firepower System Software	Cisco Firepower System Software	—	No fix listed	CNA

Cisco Firepower System Software Vendor— Affected Cisco Firepower System Software Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.1.0:::::::*	6.1.0	Vulnerable	Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.0:::::::*	6.2.0	Vulnerable	Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.2:::::::*	6.2.2	Vulnerable	Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3:::::::*	6.2.3	Vulnerable	Cisco

cpe:2.3:a:cisco:secure_firewall_threat_defense:6.1.0:*:*:*:*:*:*:* Versions 6.1.0 Vulnerable ·Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.0:*:*:*:*:*:*:* Versions 6.2.0 Vulnerable ·Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.2:*:*:*:*:*:*:* Versions 6.2.2 Vulnerable ·Cisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3:*:*:*:*:*:*:* Versions 6.2.3 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-0138
2026-10-03 Alias added: GHSA-5qfr-j674-96hc

References

Advisory 1

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fss

TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
TI-2023-06973 Authentication bypass in Cisco Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.1
TI-2026-82192 Denial of service in Cisco Secure Firewall ASA and FTD SSL VPN KEVCVSS 3.1HIGH 8.6
TI-2026-16533 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense… KEVCVSS 3.1HIGH 8.6
TI-2025-14657 Missing authorization in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1HIGH 8.6

See all 276 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences