CVE-2026-10544 Overview
CVE-2026-10544 is a command injection vulnerability in the built-in Privileged Access Management (PAM) provider password rotation templates of Devolutions Server. The flaw stems from improper neutralization of special elements [CWE-78] in template processing. An authenticated user with write access to a vault can inject arbitrary operating system commands. Those commands execute on systems managed by the affected PAM provider during password rotation operations. The vulnerability affects Devolutions Server 2026.2.4.0 and Devolutions Server 2026.1.20.0 and earlier.
Critical Impact
Authenticated users with vault write permissions can execute arbitrary OS commands on downstream managed systems through crafted PAM password rotation templates.
Affected Products
- Devolutions Server 2026.2.4.0
- Devolutions Server 2026.1.20.0 and earlier
- Built-in PAM provider password rotation templates
Discovery Timeline
- 2026-06-08 - CVE-2026-10544 published to NVD
- 2026-06-09 - Last updated in NVD database
Technical Details for CVE-2026-10544
Vulnerability Analysis
The vulnerability resides in how Devolutions Server processes password rotation templates within its built-in PAM provider. Template fields accept input that flows into command construction without proper neutralization of shell metacharacters. When the PAM provider executes a password rotation against a managed endpoint, the malicious template content is concatenated into the executed command string. The resulting command runs in the security context the PAM provider uses to access the target system. This breaks the trust boundary between vault content authors and the privileged automation that operates on managed hosts.
Root Cause
The root cause is classified as OS Command Injection [CWE-78]. Special elements such as shell metacharacters, command separators, and substitution sequences are not stripped or escaped before template content is passed to the underlying command interpreter. Templates were treated as trusted configuration data rather than as untrusted input subject to validation.
Attack Vector
Exploitation requires an authenticated account that holds write access to a vault containing PAM-managed entries. The attacker modifies a password rotation template to embed command injection payloads using shell control characters. The next rotation cycle, whether triggered manually or on schedule, executes the attacker-supplied commands on the managed system. The attack surface is network-reachable through the Devolutions Server administrative interface or API.
No verified public proof-of-concept code is available. See the Devolutions Security Advisory DEVO-2026-0015 for vendor-supplied technical details.
Detection Methods for CVE-2026-10544
Indicators of Compromise
- Unexpected modifications to PAM password rotation templates within Devolutions Server vaults
- Shell metacharacters (;, &&, |, backticks, $()) present in template fields not intended to accept them
- Anomalous child processes spawned by the PAM rotation service account on managed endpoints
- Outbound network connections from managed systems coinciding with password rotation schedules
Detection Strategies
- Audit Devolutions Server administrative logs for Template edit events correlated with newly granted vault write permissions
- Monitor managed endpoints for command execution by PAM service accounts that deviates from documented rotation scripts
- Compare current template content against known-good baselines and alert on changes containing shell control sequences
Monitoring Recommendations
- Forward Devolutions Server audit logs to a centralized SIEM and create alerts for template modification events
- Enable process creation logging (e.g., Windows Event ID 4688, Linux auditd execve) on systems managed by the PAM provider
- Review the list of accounts holding vault write permissions on a recurring basis and remove unnecessary grants
How to Mitigate CVE-2026-10544
Immediate Actions Required
- Upgrade Devolutions Server to a fixed release as specified in Devolutions Security Advisory DEVO-2026-0015
- Inventory all vaults using the built-in PAM provider and review password rotation templates for unexpected content
- Reduce the set of users with write access to vaults containing PAM entries to the minimum required
Patch Information
Devolutions has published advisory DEVO-2026-0015 addressing this issue. Administrators should upgrade from vulnerable versions 2026.2.4.0 and 2026.1.20.0 or earlier to the fixed version listed in the vendor advisory. Refer to the Devolutions Security Advisory DEVO-2026-0015 for the exact remediated build numbers and release notes.
Workarounds
- Restrict vault write permissions to a small, audited set of trusted administrators until patching is complete
- Disable scheduled password rotations on affected PAM providers if templates cannot be immediately validated
- Manually inspect every PAM password rotation template for shell metacharacters before allowing rotation jobs to run
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
