HOMEVULNERABILITIESCVE-2018-20193
HIGH

CVE-2018-20193

CWE-269Published: December 21, 2018· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Certain Secure Access SA Series SSL VPN products (originally developed by Juniper Networks but now sold and supported by Pulse Secure, LLC) allow privilege escalation, as demonstrated by Secure Access SSL VPN SA-4000 5.1R5 (build 9627) 4.2 Release (build 7631). This occurs because appropriate controls are not performed. Specifically, it is possible for a readonly user to change the administrator user password by making a local copy of the /dana-admin/user/update.cgi page, changing the "user" value, and saving the changes.

NVD Source

Technical Analysis

CVE-2018-20193 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

pulsesecure1 product(s)
secure access series ssl vpn sa-4000
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (4)

http://seclists.org/fulldisclosure/2018/Dec/37Exploit · Mailing List · Third Party Advisory
http://www.securityfocus.com/bid/106289Third Party Advisory · VDB Entry
http://seclists.org/fulldisclosure/2018/Dec/37Exploit · Mailing List · Third Party Advisory
http://www.securityfocus.com/bid/106289Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2018-20193
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-269
CISA KEVNo
Affected1 vendor(s)
PublishedDec 21, 2018

Related CVEs (CWE-269)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2018-20193 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.