CVE-2026-10520: Ivanti Sentry RCE Vulnerability

CVE-2026-10520 Overview

CVE-2026-10520 is an OS Command Injection vulnerability [CWE-78] affecting Ivanti Sentry before versions R10.5.2, R10.6.2, and R10.7.1. The flaw allows a remote, unauthenticated attacker to execute arbitrary operating system commands with root privileges on the underlying appliance. Ivanti Sentry brokers traffic between mobile devices and backend enterprise systems, making it a high-value target for adversaries seeking lateral movement into corporate infrastructure. A public proof-of-concept exists in the watchTowr Labs repository, increasing the likelihood of opportunistic exploitation.

Critical Impact
Unauthenticated remote attackers can achieve root-level remote code execution on Ivanti Sentry appliances, fully compromising the device and any secrets or traffic it brokers.

Affected Products

Ivanti Sentry versions prior to R10.5.2
Ivanti Sentry versions prior to R10.6.2
Ivanti Sentry versions prior to R10.7.1

Discovery Timeline

2026-06-09 - CVE-2026-10520 published to NVD
2026-06-11 - Last updated in NVD database

Technical Details for CVE-2026-10520

Vulnerability Analysis

The vulnerability is classified under CWE-78, Improper Neutralization of Special Elements used in an OS Command. Ivanti Sentry passes attacker-controlled input from a network-reachable interface into an OS command execution context without adequate sanitization. Because the request reaches the vulnerable code path before authentication is enforced, no credentials are required to trigger the issue.

Successful exploitation yields code execution as the root user. An attacker can read configuration files, harvest credentials and certificates used to broker mobile traffic, pivot to internal Ivanti EPMM (MobileIron Core) systems, and establish persistence on the appliance. The scope change indicated by the CVSS vector reflects the appliance's ability to impact backend systems beyond its own security boundary.

Root Cause

The root cause is missing or insufficient input neutralization on a parameter that is later passed to a shell or system call. Special shell metacharacters such as ;, |, &, and backticks allow command separation and chaining within the originally intended command string.

Attack Vector

Exploitation requires only network access to the Sentry management or service interface. The attacker sends a crafted HTTP request containing shell metacharacters in a vulnerable parameter. The injected command executes in the context of the Sentry service account, which runs as root. The public proof-of-concept demonstrates end-to-end unauthenticated RCE; see the watchTowr Labs PoC for technical details.

No verified exploitation code is reproduced here. Refer to the Ivanti Security Advisory for the authoritative technical write-up.

Detection Methods for CVE-2026-10520

Indicators of Compromise

Unexpected child processes spawned by the Ivanti Sentry web service, such as sh, bash, curl, wget, nc, or python.
New or modified files in web-accessible directories, cron paths, or /tmp on the Sentry appliance.
Outbound network connections from the Sentry appliance to unfamiliar IP addresses, especially over non-standard ports.
HTTP requests to Sentry endpoints containing shell metacharacters such as ;, |, &&, or URL-encoded equivalents (%3B, %7C).

Detection Strategies

Inspect Sentry HTTP and application logs for anomalous parameters containing command separators or encoded shell syntax.
Hunt for process lineage where the Sentry Java or Tomcat process is the parent of a shell or networking utility.
Correlate authentication telemetry: requests that reach administrative endpoints without a preceding successful authentication event are suspicious.
Compare appliance binaries and configuration files against known-good baselines after any suspected exposure window.

Monitoring Recommendations

Forward Sentry system, web, and audit logs to a centralized SIEM and alert on shell invocations by the appliance service account.
Monitor egress traffic from Sentry management interfaces and restrict it to known destinations.
Track CISA KEV updates and EPSS movement for CVE-2026-10520; the current EPSS percentile indicates elevated exploitation likelihood relative to most CVEs.

How to Mitigate CVE-2026-10520

Immediate Actions Required

Upgrade Ivanti Sentry to R10.5.2, R10.6.2, or R10.7.1, or later, per the Ivanti Security Advisory.
Restrict network access to Sentry management and service interfaces to trusted administrative networks only.
Audit Sentry appliances for signs of compromise, including unexpected processes, new files, and outbound connections, before and after patching.
Rotate any credentials, API tokens, and certificates stored on or accessible to the appliance if compromise is suspected.

Patch Information

Ivanti has released fixed builds in Sentry R10.5.2, R10.6.2, and R10.7.1. Apply the appropriate release for your deployment branch. Detailed patch guidance is published in the Ivanti Security Advisory for CVE-2026-10520 and CVE-2026-10523.

Workarounds

Block external access to the Sentry administrative interface at the network perimeter until the patch is applied.
Place Sentry appliances behind a reverse proxy or WAF that strips or rejects shell metacharacters in request parameters.
Enforce network segmentation so that a compromised Sentry appliance cannot reach unrelated backend systems.

bash

# Example: restrict access to Sentry management interface using iptables
# Replace 10.0.0.0/24 with your administrative network
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP