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CVE-2016-6366

Published: Aug 18, 2016Updated: Apr 22, 2026 Sources: CVE List NVD BDUCWE-120
NVD MITRE
8.8CVSSHIGH
EPSS Score
87.5%
Top 0.3%
CISA KEV
Active Exploitation
Since May 24, 2022
Exploits
4 Known
Remediation
Patch Available

Description

Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-120

Affected Products

Adaptive Security ApplianceCisco Systems Inc.
Network Device
Networking Infrastructure / firewall
pix firewall softwarecisco
On-premFirmware
Networking Infrastructure / firewall
adaptive security appliance softwarecisco
On-premNetwork Device
Networking Infrastructure / firewall
asa 1000v cloud firewall softwarecisco
On-prem
Networking Infrastructure / router-switch
n/an/a
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:May 24, 2022
Remediation due:Jun 14, 2022

Required action: Apply updates per vendor instructions.

4 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-snmp
tools.cisco.com
http://blogs.cisco.com/security/shadow-brokers
blogs.cisco.com
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516
tools.cisco.com
and 6 more references View all →

Timeline

Published
Aug 18, 2016
Added to CISA KEV
May 24, 2022
Last Updated
Apr 22, 2026

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