Resource exhaustion in Cisco iOS

CVE-1999-0159

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.

Vulnerability class: DoS (Denial of Service)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.011 (64.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-1999-0159: held from 0.011 to 0.011.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

  • Cisco iOS — versions 11.1\(17\)cc, 11.1(16), 11.0(20.3)

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-1999-0159?
CVE-1999-0159 is a low-severity vulnerability in Cisco iOS, classified under Uncontrolled Resource Consumption. CVSS score: 3.5/10. Published 1998-08-12.
How severe is CVE-1999-0159?
Low severity. CVSS v3 base score is 3.5 out of 10.