CVE-2016-6380
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.01% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- cisco/ios · cisco/ios xe · cisco/ios xe 3.2ja · cisco/ios xe 3.3sg · cisco/ios xe 3.3xo · cisco/ios xe 3.4sg
- Source
- psirt@cisco.com
EPSS 3.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dnsVendor Advisory
- 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-dnsVendor Advisory
- http://www.securityfocus.com/bid/93201
- http://www.securitytracker.com/id/1036914
- https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.