# CVE-2018-0179: Cisco IOS Software Denial-of-Service Vulnerability

Source: https://junglewise.ai/threats/cve-2018-0179-cisco-ios-software-denial-of-service-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2018-0179 · Severity: critical · CVSS 5.9 · Exploited in the wild · Published 2022-03-03

A vulnerability in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system. This results in a denial of service (DoS) condition on devices running specific versions of Cisco IOS.

Technologies: [Cisco IOS](https://junglewise.ai/threats/technologies/ios), [Cisco Ios Software](https://junglewise.ai/threats/technologies/ios-software), [Cisco IOS XE](https://junglewise.ai/threats/technologies/ios-xe). Vendors: [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2018-0179 exploited in the wild?** Yes. CVE-2018-0179 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.

**How severe is CVE-2018-0179?** Critical severity, with a CVSS score of 5.9, published 3 March 2022.

**Which products and versions are affected?** Cisco IOS Software 15.4(2)T, 15.4(3)M, 15.4(2)CG and later.

**Is there a fix for CVE-2018-0179?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-0179 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2018-0179?** Check whether you run Cisco IOS, Cisco Ios Software or Cisco IOS XE. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Cisco IOS Software 15.4(2)T, 15.4(3)M, 15.4(2)CG and later

## Timeline

- 2018-03-28: disclosed: Cisco Security Advisory published
- 2022-03-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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