CVEs / CVE-2016-6366
CVE-2016-6366: Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 24 May 2022
- high 8.8 CVSS 3.1 (NVD)
- EPSS 87.5% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) code of Cisco ASA software could allow an attacker to cause a reload of the affected system or to remotely execute code.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 24 May 2022 |
|---|---|
| Due date for US federal agencies | 14 Jun 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-120 |
References
- CVE-2016-6366 on NVD
- CVE-2016-6366 in the CISA KEV catalog
- http://blogs.cisco.com/security/shadow-brokers Exploit, Press/Media Coverage, Vendor Advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-snmp Vendor Advisory
- http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516 Vendor Advisory
- http://www.securityfocus.com/bid/92521 Broken Link, Not Applicable, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036637 Broken Link, Third Party Advisory, VDB Entry
- https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40258.zip Broken Link, Exploit
- https://www.exploit-db.com/exploits/40258/ Third Party Advisory, VDB Entry
- https://zerosum0x0.blogspot.com/2016/09/reverse-engineering-cisco-asa-for.html Exploit, Technical Description
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6366 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.