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CVE-1999-0159 Details

Description

Attackers can crash a Cisco IOS router or device, provided they can get to an interactive prompt (such as a login). This applies to some IOS 9.x, 10.x, and 11.x releases.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:3.5 LOWVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0159	CVE
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0159	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Weakness Not in a Standard CWE Category	[email protected]
CWE-400	Uncontrolled Resource Consumption	CISA-ADP

Affected Products

Product	Versions
cisco ios	9.1 11.0(20.3) 11.1(15)ca 11.1(16) 11.1(16)aa
CPE cpe:2.3:o:cisco:ios:9.1:::::::* cpe:2.3:o:cisco:ios:11.0(20.3):::::::* cpe:2.3:o:cisco:ios:11.1(15)ca:::::::* cpe:2.3:o:cisco:ios:11.1(16):::::::* cpe:2.3:o:cisco:ios:11.1(16)aa:::::::* cpe:2.3:o:cisco:ios:11.1(16)ia:::::::* cpe:2.3:o:cisco:ios:11.1(17)cc:::::::* cpe:2.3:o:cisco:ios:11.1(17)ct:::::::* cpe:2.3:o:cisco:ios:11.2(8)sa3:::::::* cpe:2.3:o:cisco:ios:11.2(9)p:::::::* cpe:2.3:o:cisco:ios:11.2(9)xa:::::::* cpe:2.3:o:cisco:ios:11.2(10):::::::* cpe:2.3:o:cisco:ios:11.2(10)bc:::::::* cpe:2.3:o:cisco:ios:11.3(1):::::::* cpe:2.3:o:cisco:ios:11.3(1)ed:::::::* cpe:2.3:o:cisco:ios:11.3(1)t:::::::* Remediation No remediation found in references.

Product

Versions

cisco ios

9.1

11.0(20.3)

11.1(15)ca

11.1(16)

11.1(16)aa

CPE

cpe:2.3:o:cisco:ios:9.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.0(20.3):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(15)ca:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(16):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(16)aa:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(16)ia:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(17)cc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.1(17)ct:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.2(8)sa3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.2(9)p:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.2(9)xa:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.2(10):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.2(10)bc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.3(1):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.3(1)ed:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:11.3(1)t:*:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Jun 16, 2026	CVE Modified	CISA-ADP
Apr 16, 2026		[email protected]
Aug 27, 2025	CVE Modified	CISA-ADP
Nov 20, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 17, 2022	CVE Modified	[email protected]
Jan 1, 2004	Initial Analysis	[email protected]