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CVE-2017-11321

31
FAUCET Score

CVE-2017-11321 describes a critical vulnerability in UCOPIA Wireless Appliance versions prior to 5.1.8, where a restricted shell interface allows remote authenticated users to escalate privileges to 'admin' by injecting shell metacharacters into the 'less' command. This vulnerability carries a CVSS v3.1 score of 7.2 (HIGH), indicating that an attacker can achieve complete compromise of confidentiality, integrity, and availability with high privileges and low attack complexity over the network. While not listed on CISA's KEV catalog, an ExploitDB entry (EDB-42937) confirms the existence of public exploit code, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.1.7CPE matchmatch criteria
cpe:2.3:a:ucopia:wireless_appliance:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.34%
Probability of exploitation in next 30 days
EPSS Percentile
94.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-42937 · Oct 2, 2017
This CVE's current EPSS score of 0.0834 is in the 93rd percentile among its peer group of 5,531 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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

Remediation records are not available for this CVE.

References

sysdream.com / news/lab/2017-09-29-cve-2017-11321-ucopia-wireless-appliance-5-1-8-restricted-shell-escape
Exploit
exploit-db.com / exploits/42937
ExploitThird Party AdvisoryVDB Entry