CVE-2020-8260VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2020-8260: Ivanti Pulse Connect Secure Code Execution Vulnerability

Affects Ivanti Pulse Connect SecureSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
EPSS: 96.5% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

Description

CVE-2020-8260 is a high-severity vulnerability in Ivanti Pulse Connect Secure that allows an authenticated attacker to execute arbitrary code by exploiting uncontrolled gzip extraction. This vulnerability has been exploited in the wild. No specific affected versions or patch information are provided in the available data.

Summary

Pulse Connect Secure contains an unspecified vulnerability identified as CVE-2020-8260 that enables an authenticated attacker to perform code execution through uncontrolled gzip extraction. The vulnerability is classified under CWE-434, which relates to improper handling of compressed data. Exploitation of this flaw has been observed in the wild, indicating active threat usage. No detailed technical specifics or affected version ranges are provided in the source data.

Impact

An authenticated attacker can execute arbitrary code on the vulnerable Pulse Connect Secure system by exploiting this vulnerability. This can lead to full compromise of the affected system. The vulnerability has been exploited in the wild, increasing the urgency of mitigation. No information is available about ransomware or other specific campaign usage.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, organizations should monitor Ivanti's advisories for updates. Until a fix is available, restrict access to Pulse Connect Secure to trusted users and networks to reduce risk.

Weaknesses

CWE-434Unrestricted File Upload (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 08:56:36 UTC

Weaknesses

References

Related threats