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CVE-2018-0480

Cisco IOS XE Software Errdisable Denial of Service Vulnerability

6.1 Medium

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.52%Down 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.1

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Record
CVE-2018-0480
CVSS 3.0
6.1 MediumCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0
5.7 MediumAV:A/AC:M/Au:N/C:N/I:N/A:C
Weakness
CWE-362
Updated
2026-11-02
CVE List No score

Cisco IOS XE Software Errdisable Denial of Service Vulnerability

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Record
CVE-2018-0480
Weakness
CWE-362
Updated
2026-11-02
EUVDEUVD-2018-1303 No score

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Record
EUVD-2018-1303
Updated
2026-11-03
GitHub AdvisoriesGHSA-2q4r-gmc8-6577 6.1

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an...

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Record
GHSA-2q4r-gmc8-6577
CVSS 3.0
6.1 MediumCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness
CWE-362
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-0480 is a medium vulnerability (CVSS 6.1) in Cisco Ios Xe Software, published October 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.

References

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