CVE-2026-1340

This flaw is like leaving the front door unlocked and having a hidden remote-control button. Attackers can send a specially made message to the Ivanti Endpoint Manager Mobile service, and the system can be tricked into running attacker commands without needing a login.

In practice, that means an attacker may be able to take over the device/server running it and then install malicious software or steal sensitive information.

This matters to you if you run Ivanti Endpoint Manager Mobile (including the Ivanti Endpoint Manager Mobile service/API) and attackers can reach it over the network.

This is a “no login needed” remote code execution issue, so your exposure depends on network reachability of the service; if it’s reachable from the internet or from untrusted networks, risk is high.

This is already being exploited in the wild, including by an advanced threat actor, so attackers do not need to guess—they can actively target exposed systems. The CISA KEV listing makes this a high-confidence, real-world threat.

Treat it as a top-priority incident: upgrade to a fixed version immediately, and restrict access to the service until the update is complete.

1. Confirm exposure (what to check)

   • Identify your Ivanti Endpoint Manager Mobile deployment and determine the exact installed version/RPM package line.
   • Specifically check whether your deployment is on the 12.x.0.x or 12.x.1.x RPM release lines, which are called out as fixed-version boundaries.
   • Confirm how the service is exposed: is Ivanti Endpoint Manager Mobile reachable from the internet, a VPN, or any broadly accessible network segment?

2. Determine the fixed version path

   • Ivanti Endpoint Manager Mobile is fixed in RPM releases that are not in the affected 12.x.0.x or 12.x.1.x lines.
   • Follow the vendor’s security advisory instructions tied to this CVE to select the correct fixed RPM build for your environment.

3. Upgrade now

   • Apply the vendor-provided update to move off the vulnerable 12.x.0.x / 12.x.1.x RPM lines.
   • During the upgrade window, limit access so attackers cannot hit the service.

4. Temporary mitigations if you cannot patch immediately

   • Block the Ivanti Endpoint Manager Mobile service from the public internet (or any untrusted networks) using firewall/network controls.
   • Restrict access to only the required internal networks or management jump hosts.
   • Follow the vendor’s advisory guidance for compensating controls until the fixed build is installed.

5. Validate and monitor

   • After upgrade, confirm the updated service is running and still accessible only from intended sources.
   • Review logs for signs of pre-auth attack traffic (specially crafted web/API requests) and any abnormal command execution attempts.

6. KEV timeline

   • CISA remediation due date: 2026-04-11.

7. Ongoing actions

   • Keep the service tightly network-restricted.
   • Ensure future updates follow the vendor’s security advisory cadence for this product.

Severity and status: Reported as critical (unauthenticated remote code execution) and confirmed for action via CISA KEV, indicating real-world exploitation; exploitation is also described as active in the wild by an APT group.

Mechanism / weakness: CWE-94 (code injection). Attackers send specially crafted input to the Ivanti Endpoint Manager Mobile web interface or API; insufficient input sanitization causes the server to interpret and execute attacker-supplied commands.

Attack vector and preconditions: Network-based, requires no authentication and no user interaction. The practical precondition is network access to the Ivanti Endpoint Manager Mobile service.

Fixed versions: Vendor reports fixed RPM releases for Endpoint Manager Mobile are available, with fixed boundaries noted for the 12.x.0.x and 12.x.1.x RPM lines (upgrade to a fixed RPM build outside these lines).

Exploit maturity: Active exploitation with threat-actor activity noted (actor: Qilin). No public exploit code on record was indicated, but KEV/news confirm weaponized usage.

KEV meaning: “CISA KEV YES” means CISA cataloged it for required mitigation due to known exploitation and provides a specific remediation due date.