---
title: "CVE-2026-1603: Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-1603/
description: "CVE-2026-1603 (Ivanti Endpoint Manager (EPM)): Exploited in the wild (CISA KEV). An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-02-10
date_modified: 2026-03-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-1603"
kev: true
cvss: 8.6
epss: 0.88335
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-1603: Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Ivanti Endpoint Manager (EPM). CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-03-09, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-03-23 ; treat that as the outer limit, not the target.
- EPSS 88.3% , percentile 99.8: FIRST’s model estimates a 88.3% chance of exploitation activity in the next 30 days, higher than 99.8% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

An authentication bypass in Ivanti Endpoint Manager before version 2024 SU5 allows a remote unauthenticated attacker to leak specific stored credential data.

## Affected products (CVE record)

- Ivanti Endpoint Manager: see advisory

## Severity

- ivanti CVSS 3.1: 8.6 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`

## Exploitation

- CISA KEV: added 2026-03-09; federal due date 2026-03-23. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 88.33% probability of exploitation activity in the next 30 days; percentile 99.8.

## Sources

- [Listed in CISA KEV notes (hub.ivanti.com)](https://hub.ivanti.com/s/article/Security-Advisory-EPM-February-2026-for-EPM-2024?language=en_US)
- [CVE.org record CVE-2026-1603](https://www.cve.org/CVERecord?id=CVE-2026-1603)
- [NVD entry CVE-2026-1603](https://nvd.nist.gov/vuln/detail/CVE-2026-1603)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-1603)

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Source page: https://erroneo.us/security/cve/CVE-2026-1603/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt