CVE-2019-15276

Wireless Lan Controller Software vulnerability

CVSS

6.5

EPSS

46.3%

EPSS pct

99th

Exploited

No known

A vulnerability in the web interface of Cisco Wireless LAN Controller Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists due to a failure of the HTTP parsing engine to handle specially crafted URLs. An attacker could exploit this vulnerability by authenticating with low privileges to an affected controller and submitting the crafted URL to the web interface of the affected device. Conversely, an unauthenticated attacker could exploit this vulnerability by persuading a user of the web interface to click the crafted URL. A successful exploit could allow the attacker to cause an unexpected restart of the device, resulting in a DoS condition.

Affected vendor

Cisco

Affected product

Wireless Lan Controller Software

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2019-11-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 46.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2019-15276

Confirm whether Cisco Wireless Lan Controller Software is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-15276.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-15276

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-15276 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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