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CVE-2020-8260

Published: Oct 28, 2020Updated: Dec 18, 2025 Sources: CVE List NVD BDUCWE-434
NVD MITRE
7.2CVSSHIGH
EPSS Score
96.5%
Top 0.1%
CISA KEV
Active Exploitation
Since Nov 3, 2021
Exploits
1 Known
Remediation
Patch Available

Description

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-434

Affected Products

Pulse Connect SecurePulsesecure
On-premNetwork Device
Networking Infrastructure / vpn-gateway
Pulse Policy SecurePulsesecure
Security Product
Networking Infrastructure / firewall
Pulse Secure Desktop ClientPulsesecureNetworking Infrastructure
connect secureivantiSecurity Products
Pulse Connect Secure / Pulse Policy Securen/a
pulsesecurecommercialUSNetworking Infrastructureaka pulsedsecure, pulse secure
ivanticommercialUSSecurity Productsaka ivanti connect secure, avalanche

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Nov 3, 2021
Remediation due:May 3, 2022

Required action: Apply updates per vendor instructions.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

http://packetstormsecurity.com/files/160619/Pulse-Secure-VPN-Remote-Code-Execution.html
packetstormsecurity.com
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601
kb.pulsesecure.net
https://www.cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv
cisa.gov
and 1 more references View all →

Timeline

Published
Oct 28, 2020
Added to CISA KEV
Nov 3, 2021
Last Updated
Dec 18, 2025

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