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CVE-2017-3834

25
FAUCET Score

CVE-2017-3834 describes a critical vulnerability in Cisco Aironet 1830 and 1850 Series Access Points running Cisco Mobility Express Software prior to Release 8.2.111.0. This flaw stems from the existence of default credentials, allowing an unauthenticated, remote attacker with Layer 3 connectivity to gain complete control of the device via SSH. With a CVSS score of 9.8 (CRITICAL), the vulnerability presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
8.2.100.0CPE matchmatch criteria
cpe:2.3:o:cisco:aironet_access_point_firmware:8.2.100.0:*:*:*:*:*:*:*
8.2.102.43CPE matchmatch criteria
cpe:2.3:o:cisco:aironet_access_point_firmware:8.2.102.43:*:*:*:*:*:*:*
8.2.102.139CPE matchmatch criteria
cpe:2.3:o:cisco:aironet_access_point_firmware:8.2.102.139:*:*:*:*:*:*:*
8.2.111.0CPE matchmatch criteria
cpe:2.3:o:cisco:aironet_access_point_firmware:8.2.111.0:*:*:*:*:*:*:*
8.2.121.12CPE matchmatch criteria
cpe:2.3:o:cisco:aironet_access_point_firmware:8.2.121.12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.46%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0446 is in the 84th percentile among its peer group of 36,897 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, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-20170405-ame
Vendor Advisory
securityfocus.com / bid/97422
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038181
Third Party AdvisoryVDB Entry