CVE-2026-1603 Ivanti Endpoint Manager (EPM): login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Mar 23, 2026
What to do
- Install Ivanti's security update for Endpoint Manager (EPM). If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability
- Product
- Ivanti Endpoint Manager (EPM)
- CISA description
- Ivanti Endpoint Manager (EPM) contains an authentication bypass using an alternate path or channel vulnerability that could allow a remote unauthenticated attacker to leak specific stored credential data.
- Type of flaw
- Login or permission bypass (CWE-288)
- Confirmed exploited
- Mar 9, 2026
- US federal patch deadline
- Mar 23, 2026
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Answering about CVE-2026-1603 ·
Questions about CVE-2026-1603
Is CVE-2026-1603 being exploited?
Yes. CISA added CVE-2026-1603 to its Known Exploited Vulnerabilities catalog on Mar 9, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-1603?
Install Ivanti's security update for Endpoint Manager (EPM). If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2026-1603?
Only if you use Ivanti Endpoint Manager (EPM). Aimed mostly at company systems — you are affected through the companies you use, not your own phone.