What’s Vulnerable › Vulnerabilities

CVE-2016-6380

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-10-05 · updated 2026-06-17
• Weakness: CWE-20

Description

The DNS forwarder in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.15 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (data corruption or device reload) via a crafted DNS response, aka Bug ID CSCup90532.

Affected products

• Cisco IOS: 12.0(3)t, 12.0(3)t1, 12.0(3)t2, 12.0(3)t3, 12.0(3)xe, 12.0(3)xe1 (+2994)
• Cisco IOS XE: 3.1.0s, 3.1.0sg, 3.1.1s, 3.1.1sg, 3.1.2s, 3.1.3as (+108)
• Cisco Ios Xe 3.2Ja: 3.2.0ja
• Cisco Ios Xe 3.3Sg: 3.3.0sg, 3.3.1sg, 3.3.2sg
• Cisco Ios Xe 3.3Xo: 3.3.0xo, 3.3.1xo, 3.3.2xo
• Cisco Ios Xe 3.4Sg: 3.4.0sg, 3.4.1sg, 3.4.2sg, 3.4.3sg, 3.4.4sg, 3.4.5sg (+2)

References

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns
• http://www.securityfocus.com/bid/93201
• http://www.securitytracker.com/id/1036914
• https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns
• http://www.securityfocus.com/bid/93201
• http://www.securitytracker.com/id/1036914
• https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04

Get alerted when CVE-2016-6380 or the next vulnerability affects your stack