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TI-2018-00076 Aliases CVE-2018-0101GHSA-gxj8-6mjh-32m2

Double free in Cisco Adaptive Security Appliance

Priority CRITICAL 91CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

A vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to an attempt to double free a region of memory when the webvpn feature is enabled on the Cisco ASA device. An attacker could exploit this vulnerability by sending multiple, crafted XML packets to a webvpn-configured interface on the affected system. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system, or cause a reload of the affected device. This vulnerability affects Cisco ASA Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, ASA 1000V Cloud Firewall, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4110 Security Appliance, Firepower 9300 ASA Security Module, Firepower Threat Defense Software (FTD). Cisco Bug IDs: CSCvg35618.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.8678 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco Adaptive Security ApplianceCisco Adaptive Security Appliance—No fix listedCNA
  • Cisco Adaptive Security Appliance Vendor— Affected Cisco Adaptive Security Appliance Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*before 9.1.7.23VulnerableCisco
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*9.2.0 to before 9.2.4.27; 9.3.0 to before 9.4.4.16; 9.5.0 to before 9.6.4.3; 9.7.0 to before 9.7.1.21; 9.8.0 to before 9.8.2.20; 9.9.0 to before 9.9.1.2VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.0.0:*:*:*:*:*:*:*6.0.0VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.0.1:*:*:*:*:*:*:*6.0.1VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.1.0:*:*:*:*:*:*:*6.1.0VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.0:*:*:*:*:*:*:*6.2.0VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.1:*:*:*:*:*:*:*6.2.1VulnerableCisco
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.2:*:*:*:*:*:*:*6.2.2VulnerableCisco
  • cpe:2.3:a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* Versions before 9.1.7.23 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* Versions 9.2.0 to before 9.2.4.27; 9.3.0 to before 9.4.4.16; 9.5.0 to before 9.6.4.3; 9.7.0 to before 9.7.1.21; 9.8.0 to before 9.8.2.20; 9.9.0 to before 9.9.1.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:secure_firewall_threat_defense:6.0.0:*:*:*:*:*:*:* Versions 6.0.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:secure_firewall_threat_defense:6.0.1:*:*:*:*:*:*:* Versions 6.0.1 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:6.2.1:*:*:*:*:*:*:* Versions 6.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.2:*:*:*:*:*:*:* Versions 6.2.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0101
  2. 2026-10-03 Alias added: GHSA-gxj8-6mjh-32m2

References

Exploit 2

Advisory 2

  • TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
  • TI-2016-05454 Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on… KEVCVSS 3.1HIGH 8.8
  • 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 354 →

Sources

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