Cisco IOS XE Software HTTP Denial of Service Vulnerability
Published Oct 5, 2018 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Cisco IOS XE Software HTTP Denial of Service Vulnerability
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A vulnerability in the web framework of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the affected software improperly parsing malformed HTTP packets that are destined to a device. An attacker could exploit this vulnerability by sending a malformed HTTP packet to an affected device for processing. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected device, resulting in a DoS condition.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 20180926 Cisco IOS XE Software HTTP Denial of Service Vulnerability ↗
- 1041737 ↗
- 105397 ↗
- ics-cert.us-cert.gov ↗
Record history
Published Oct 5, 2018 · Last refreshed Nov 3, 2026