---
id: "CVE-2020-8243"
kind: "vulnerability"
aliases: ["CVE-2020-8243"]
title: "Ivanti Pulse Connect Secure: Ivanti Pulse Connect Secure Code Execution Vulnerability"
severity: "high"
cvss: 7.2
epss: 0.90759
exploited: true
status: "open"
category: "vendor"
products: [{"name": "Ivanti Pulse Connect Secure", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "ivanti", "pulse-connect-secure", "self-hosted", "vendor", "vpn"]
not_affected_if: ["no-pulse-connect-secure"]
published_at: "2020-09-30T18:15:29+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:34+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-8243", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-8243", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8243", "first_seen_at": "2026-10-23T21:57:34+00:00"}]
---

# Ivanti Pulse Connect Secure: Ivanti Pulse Connect Secure Code Execution Vulnerability

Ivanti Pulse Connect Secure has a flaw in its admin web interface that lets a logged-in attacker upload a custom template and run code on the appliance. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks are happening in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Ivanti Pulse Connect Secure affected ? fixed ?

## How to check

Check the Pulse Connect Secure version against the vendor advisory; the sources do not give affected version ranges.

## Fix

Apply the Ivanti updates per vendor instructions, as CISA requires; the sources do not name a fixed version.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-8243
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-8243
- 2026-10-23T21:57:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-8243

## From the sources

Ivanti Pulse Connect Secure contains an unspecified vulnerability in the admin web interface that could allow an authenticated attacker to upload a custom template to perform code execution.

CISA required action: Apply updates per vendor instructions.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_