CISA KEV · Known exploitedMedium

CVE-2017-6663

Cisco IOS and IOS XE Software

A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause autonomic nodes of an affected system to reload, resulting in a denial of service (DoS) condition. More Information: CSCvd88936. Known Affected Releases: Denali-16.2.1 Denali-16.3.1.

CVSS: 6.5
EPSS: 2.14%
CISA KEV: Listed
Published: 2017.08.07

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability2.14%

Technical severityCVSS 6.5

Vulnerability overview

Affected product and versions

Product: Cisco IOS and IOS XE Software
Affected versions: Cisco IOS and IOS XE, 15.2(3)e, 15.2(3)e1, 15.2(3)e2, 15.2(3)e3, 15.2(3)e4, 15.2(3)e5, 15.2(3a)e, 15.2(3a)e1, 15.2(3m)e2, 15.2(3m)e3, 15.2(3m)e6, 15.2(3m)e8, 15.2(4)e, 15.2(4)e1, 15.2(4)e2, 15.2(4)e3, 15.2(5)e, 15.2(5)e1, 15.2(5a)e
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.03.24

1
Identify
Confirm that Cisco IOS and IOS XE Software and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: Not available
KEV added: 2022.03.03
Ransomware use: 미확인