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CVE-2017-6711

27
FAUCET Score

CVE-2017-6711 is a critical vulnerability in the Ultra Automation Service (UAS) of Cisco Ultra Services Framework, affecting all releases prior to 5.0.3 and 5.1. This flaw stems from an insecure default configuration of the Apache ZooKeeper service, allowing unauthenticated, remote attackers to gain unauthorized access. With a CVSS score of 9.1 (CRITICAL), an attacker can exploit this via the orchestrator network to access ZooKeeper data nodes and manipulate the system's high-availability features, leading to high impact on confidentiality and integrity. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available, the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.2CPE matchmatch criteria
cpe:2.3:a:cisco:ultra_services_framework:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 60th percentile among its peer group of 36,835 CVEs.

Social Chatter

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-20170705-uas
Vendor Advisory
securityfocus.com / bid/99440
Third Party AdvisoryVDB Entry