CVE-2026-7431 Overview
CVE-2026-7431 is an incorrect permission assignment vulnerability in Ivanti Secure Access Client versions before 22.8R6. The flaw allows a local authenticated user to read or modify sensitive log data through write access to a shared memory section. The weakness is tracked under CWE-732: Incorrect Permission Assignment for Critical Resource. Exploitation requires local access and low privileges, with no user interaction needed. The vulnerability affects the Windows version of the client and was addressed in the May 2026 Ivanti security advisory.
Critical Impact
Local authenticated users can read or tamper with sensitive log data written to a shared memory section, undermining the confidentiality and integrity of client telemetry on affected endpoints.
Affected Products
- Ivanti Secure Access Client versions prior to 22.8R6
- Ivanti Secure Access Client 22.8 releases R1 through R5
- Microsoft Windows hosts running the vulnerable client
Discovery Timeline
- 2026-05-12 - CVE CVE-2026-7431 published to NVD
- 2026-05-12 - Ivanti releases security advisory and patched client 22.8R6
- 2026-05-12 - Last updated in NVD database
Technical Details for CVE-2026-7431
Vulnerability Analysis
The Ivanti Secure Access Client maintains a shared memory section used to handle log data on Windows. The client assigns overly permissive access control on this resource, granting write access to local authenticated users who should not have that level of privilege. An attacker with a valid Windows session can map the shared memory region and modify its contents or read sensitive data placed there by the client. This violates the principle of least privilege defined in CWE-732. Because the vulnerability operates entirely against a local resource, it does not expose the network attack surface of the VPN client. However, it can be chained with other local techniques to tamper with audit trails, hide post-exploitation activity, or extract data the client expected to remain isolated to its own process boundary.
Root Cause
The root cause is improper Discretionary Access Control List (DACL) configuration on a shared memory object created by the Ivanti Secure Access Client. The object is created with a security descriptor that permits write access to local authenticated users, rather than restricting access to the service account or installer-level principals.
Attack Vector
A local authenticated user enumerates named kernel objects on the system and opens a handle to the Ivanti shared memory section. With write access granted by the permissive DACL, the attacker reads sensitive log records or writes crafted data to manipulate what the client persists. Exploitation does not require administrator privileges or user interaction.
No public proof-of-concept or exploit code is available for CVE-2026-7431. See the Ivanti Security Advisory for vendor technical details.
Detection Methods for CVE-2026-7431
Indicators of Compromise
- Unexpected handle opens to Ivanti Secure Access Client shared memory sections by non-service processes.
- Discrepancies or gaps in Ivanti client log data that cannot be correlated with normal client activity.
- Local user processes accessing or mapping named sections owned by the Ivanti client service.
Detection Strategies
- Monitor Windows handle and object access events targeting Ivanti Secure Access Client named objects from non-elevated user contexts.
- Inventory installed Ivanti Secure Access Client versions across managed Windows endpoints and flag any build earlier than 22.8R6.
- Correlate process creation telemetry with access to Ivanti log files and shared memory regions to surface anomalous reader or writer processes.
Monitoring Recommendations
- Enable object access auditing (Windows Security Event ID 4663) for Ivanti client objects on sensitive endpoints.
- Forward endpoint telemetry to a centralized log platform and alert on writes to Ivanti log artifacts originating from non-Ivanti binaries.
- Track Ivanti client version data through software inventory tooling and trigger alerts when vulnerable versions are detected.
How to Mitigate CVE-2026-7431
Immediate Actions Required
- Upgrade Ivanti Secure Access Client to version 22.8R6 or later on all Windows endpoints.
- Audit endpoints running Ivanti Secure Access Client 22.8 R1 through R5 and prioritize patching for systems exposed to multi-user logon.
- Restrict interactive logon rights on endpoints running the VPN client to reduce the pool of users that satisfy the local authenticated precondition.
Patch Information
Ivanti released a fix in Ivanti Secure Access Client 22.8R6. Refer to the Ivanti Security Advisory for CVE-2026-7431 and CVE-2026-7432 for download links and release notes. The EPSS probability for this CVE is 0.038%, indicating very low predicted exploitation in the short term, but patching remains the authoritative fix.
Workarounds
- No vendor-supplied workaround is documented; upgrading to 22.8R6 is the required remediation.
- Limit standard user access to shared and kiosk endpoints running the Ivanti client until the patch is applied.
- Increase log integrity controls by forwarding Ivanti client logs to a remote collector so that local tampering does not destroy the only copy of telemetry.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
