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CVE-2019-1659

24
FAUCET Score

CVE-2019-1659 describes a vulnerability in Cisco Prime Infrastructure (PI) versions 2.2 through 3.4.0 when integrated with Cisco Identity Services Engine (ISE). This flaw, due to improper SSL certificate validation, allows an unauthenticated, remote attacker to perform a man-in-the-middle attack on the SSL tunnel between PI and ISE. The vulnerability has a CVSS score of 7.4 (High), indicating high confidentiality and integrity impact, as an attacker could intercept and alter sensitive network client information. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available and it's not listed in CISA's KEV catalog, there has been limited community discussion and media coverage, suggesting it is not actively exploited.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2, <= 3.4.0CPE matchmatch criteria
cpe:2.3:a:cisco:prime_infrastructure:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.4HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 21st percentile among its peer group of 8,920 CVEs.

Social Chatter

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

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-20190220-prime-validation
Vendor Advisory
securityfocus.com / bid/107092
Third Party Advisory