Critical severity · published Jun 28, 2019
CVE-2018-20810
Session data between cluster nodes during cluster synchronization is not properly encrypted in Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R2 and Pulse Policy Secure…
9.8
CVSS
1.8%
EPSS
No
On KEV
Description
Session data between cluster nodes during cluster synchronization is not properly encrypted in Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R2 and Pulse Policy Secure (PPS) 5.4RX before 5.4R2. This is not applicable to PCS 8.1RX, PPS 5.2RX, or stand-alone devices.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
Connect Secure · Ivanti
8.3 · source: NVD
Affected product
CS
Connect Secure
Ivanti
More from Connect Secure
10.0
CVE-2021-22893
Ivanti Pulse Connect Secure Use-After-Free Vulnerability
10.0
CVE-2019-11510
Ivanti Pulse Connect Secure Arbitrary File Read Vulnerability
9.8
CVE-2025-22457
Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
9.1
CVE-2024-21887
Ivanti Connect Secure and Policy Secure Command Injection Vulnerability
9.0
CVE-2025-0282
Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability