Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-6380

21
FAUCET Score

CVE-2016-6380 describes a critical vulnerability in the DNS forwarder of Cisco IOS and IOS XE, affecting various versions. This flaw allows remote attackers to obtain sensitive information from process memory or cause a denial of service (data corruption or device reload) through a crafted DNS response. With a CVSS score of 8.1 (HIGH), the vulnerability is network-exploitable with high impact on confidentiality, integrity, and availability, but requires high attack complexity. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
12.0\(3\)tCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(3\)t:*:*:*:*:*:*:*
12.0\(3\)t1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(3\)t1:*:*:*:*:*:*:*
12.0\(3\)t2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(3\)t2:*:*:*:*:*:*:*
12.0\(3\)t3CPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(3\)t3:*:*:*:*:*:*:*
12.0\(3\)xeCPE matchmatch criteria
cpe:2.3:o:cisco:ios:12.0\(3\)xe:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.01%
Probability of exploitation in next 30 days
EPSS Percentile
86.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0301 is in the 44th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

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