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CVE-2017-6663

58
FAUCET Score

CVE-2017-6663 is a denial-of-service vulnerability in the Autonomic Networking feature of Cisco IOS and IOS XE Software. An unauthenticated, adjacent attacker can exploit this flaw to cause autonomic nodes to reload, leading to service disruption. With a CVSS score of 6.5 (Medium), it requires adjacent network access and low attack complexity to achieve high availability impact. This CVE is listed in CISA's KEV catalog, indicating active exploitation, despite no public exploit code in Metasploit, Nuclei, or ExploitDB. It has garnered limited community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
15.2\(3\)eCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2\(3\)e:*:*:*:*:*:*:*
15.2\(3\)e1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2\(3\)e1:*:*:*:*:*:*:*
15.2\(3\)e2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2\(3\)e2:*:*:*:*:*:*:*
15.2\(3\)e3CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2\(3\)e3:*:*:*:*:*:*:*
15.2\(3\)e4CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.2\(3\)e4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.14%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Mar 3, 2022
This CVE's current EPSS score of 0.0214 is in the 96th percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Media Mentions

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
Vendor Advisory
securityfocus.com / bid/99973
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1038999
Broken LinkThird Party AdvisoryVDB Entry