Horizon Alert
Summary of the vulnerability and why it matters
The Cisco IOS Software's Login Enhancements feature contains vulnerabilities. These flaws allow remote attackers to cause affected systems to reload. This can result in a denial of service condition for organizations.
- Cisco IOS Login Enhancements feature
- Improper memory management during login attempts
- Disruption of network services
Attack Path
How an attacker could exploit the issue
This vulnerability impacts Cisco devices running specific versions of Cisco IOS Software. An attacker can exploit this to cause a denial-of-service condition. The attack involves network access to an exposed system, without requiring authentication or specific privileges.
- Network exposure required.
- Unauthenticated attacker gains access.
- Trigger causes system reload.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability affects Cisco devices running specific versions of Cisco IOS Software. Attackers with remote access and moderate technical skill could exploit it. The primary impact is a denial-of-service condition, where an affected system could reload, disrupting operations. Given its inclusion in the CISA Known Exploited Vulnerabilities Catalog, organizations should treat this as a high-priority issue.
- Likely attacker skill level: Moderate.
- Required access or conditions: Unauthenticated remote access.
- Business risk or urgency: High.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Multiple vulnerabilities in Cisco IOS Software's Login Enhancements feature can allow remote attackers to cause a system reload, leading to a denial-of-service condition. These vulnerabilities affect specific versions of Cisco IOS Software. The exploitation of these vulnerabilities could disrupt network services.
- Identify exposed Cisco devices.
- Reduce exposure or isolate affected systems.
- Apply vendor updates and validate.
- Monitor for related activity.
