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CVE-2017-3854

22
FAUCET Score

CVE-2017-3854 is a high-severity vulnerability (CVSS 8.8) in Cisco Wireless LAN Controller (WLC) mesh code, allowing an unauthenticated, remote attacker to impersonate a WLC and potentially control traffic or take full system control. This affects various Cisco WLC series and the Virtual Wireless Controller when configured in meshed mode. The vulnerability stems from insufficient authentication of the parent access point, enabling an attacker to force a target to connect to a rogue access point. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
8.0.72.140CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_firmware:8.0.72.140:*:*:*:*:*:*:*
6.0199.4CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:6.0199.4:*:*:*:*:*:*:*
7.41.54CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:7.41.54:*:*:*:*:*:*:*
7.0220.0CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:7.0220.0:*:*:*:*:*:*:*
7.0250.0CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:7.0250.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 83rd percentile among its peer group of 1,857 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 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-20170315-wlc-mesh
Vendor Advisory
securityfocus.com / bid/96911
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038041
Third Party AdvisoryVDB Entry