CVE-2018-0167
Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run IOS, XR, and XE Software, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Mar 17, 2022.
Patch status
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
Description
Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Fixed in | Source |
|---|---|---|---|---|
| Cisco networking & security | Cisco | 5.2.0.base; <= 15.6.3m1; <= 15.2\(6\)e0a; <= 15.2\(4a\)ea5 | — | NVD |
| IOS | Cisco | 5.2.0.base; <= 15.6.3m1; <= 15.2\(6\)e0a; <= 15.2\(4a\)ea5 | — | NVD |
| IOS XR | Cisco | >= 4.1, < 5.1.3 | 5.1.3 | NVD |
| IOS, XR, and XE Software | Cisco | — | — | KEV |
Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2018-0167 scored CVSS 8.8: Cisco IOS, XR, and XE Software, Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
CISA lists this as exploited in the wild. Unpatched IOS, XR, and XE Software systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
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Coverage
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