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CVE-2018-0443

25
FAUCET Score

CVE-2018-0443 is a denial-of-service vulnerability affecting Cisco Wireless LAN Controller (WLC) Software, stemming from improper input validation in the CAPWAP protocol component. An unauthenticated, remote attacker can exploit this by sending malicious CAPWAP Discovery Request packets. This can cause connected access points to temporarily disconnect and reconnect, leading to a brief service outage. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
8.2\(151.0\)CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:8.2\(151.0\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.38%
Probability of exploitation in next 30 days
EPSS Percentile
87.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0338 is in the 78th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-dos
Vendor Advisory
securityfocus.com / bid/105686
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041922
Third Party AdvisoryVDB Entry