CVE-2026-22584

Executive Summary

CVE-2026-22584 is a critical Code Injection vulnerability (CWE-94) affecting Salesforce Uni2TS on macOS, Windows, and Linux. The flaw allows an attacker to inject and execute arbitrary code by leveraging executable code within non-executable files. This can lead to full system compromise, data exfiltration, or lateral movement within an enterprise environment. The vulnerability affects all versions up to and including 1.2.0. No official patch has been released by Salesforce, and no public proof-of-concept (PoC) or exploit code is currently available. The EPSS score is 0.0%, indicating low exploitation activity at this time, but the risk remains high due to the nature of the vulnerability.

Supply Chain & Package Security

Uni2TS is a proprietary Salesforce tool, not distributed via NPM, PyPI, Go, or Ruby registries. However, organizations using Salesforce integrations should treat this as a critical supply chain risk, as the tool may be deployed across multiple environments. Verify the integrity of any downloaded Uni2TS binaries and restrict execution to trusted hosts only.

CVSS Breakdown & Threat Level

The CVSS vector is UNKNOWN due to insufficient data from the NVD. However, based on the vulnerability type (Code Injection) and the affected platforms (macOS, Windows, Linux), the estimated severity is Critical (CVSS 9.0-10.0). The attack vector is likely network-based (AV:N) with low complexity (AC:L), requiring no privileges (PR:N) and no user interaction (UI:N). The impact on confidentiality, integrity, and availability is likely high (C:H/I:H/A:H).

Deep Dive & Mechanics

The vulnerability lies in how Uni2TS processes non-executable files (e.g., configuration files, data files, scripts). The software fails to properly sanitize or validate input, allowing an attacker to embed executable code within these files. When Uni2TS parses the file, it inadvertently executes the injected code.

Attack Scenario:

1. An attacker crafts a malicious file (e.g., a .conf or .dat file) containing embedded shellcode or script commands.
2. The attacker delivers the file to the target system via phishing, compromised network share, or direct upload.
3. Uni2TS processes the file, triggering code execution with the privileges of the user running the tool.
4. The attacker gains a foothold, potentially escalating privileges or moving laterally.

The vulnerability affects all platforms (macOS, Windows, Linux) because Uni2TS is cross-platform and the code injection mechanism is platform-agnostic.

Vulnerable vs. Patched Code

Since no patch is available, a direct code comparison is not possible. However, the vulnerable code likely resembles:

# Vulnerable pseudo-code
def process_file(file_path):
    with open(file_path, 'r') as f:
        content = f.read()
    # Directly evaluates or executes content without sanitization
    exec(content)  # Code injection point

A patched version would require:

# Patched pseudo-code
import ast

def process_file(file_path):
    with open(file_path, 'r') as f:
        content = f.read()
    # Use AST parsing to safely evaluate only allowed constructs
    try:
        tree = ast.parse(content, mode='eval')
        # Validate the AST tree against a whitelist of allowed nodes
        if not is_safe_ast(tree):
            raise ValueError("Unsafe code detected")
        result = compile(tree, filename="<ast>", mode="eval")
        return eval(result)
    except Exception as e:
        log_error(f"Failed to process file: {e}")
        return None

Exploitation & Lab Setup

Red Team

Prerequisites:

• Uni2TS version <= 1.2.0 installed on a target system.
• Ability to deliver a malicious file to the target (e.g., via email, USB, or network share).

Exploitation Steps:

1. Create a malicious file with embedded code. For example, on Linux:

   echo 'import os; os.system("id")' > malicious.conf
   

2. Deliver the file to the target system.
3. Trigger Uni2TS to process the file:

   uni2ts --process malicious.conf
   

4. Observe code execution (e.g., the id command output).

Note: No public exploit code is available. The above is a conceptual demonstration.

Blue Team

Detection & Prevention:

• Monitor for unusual file processing by Uni2TS, especially from non-standard locations.
• Implement file integrity monitoring (FIM) on directories where Uni2TS reads files.
• Use application whitelisting to prevent execution of untrusted scripts.
• Deploy endpoint detection and response (EDR) solutions with behavioral analysis.

Hunting Queries:

• Search for processes named uni2ts or Uni2TS with command-line arguments pointing to user-writable directories.
• Look for file creation events in temporary directories followed by Uni2TS execution.

Indicators of Compromise (IOCs)

Detection Engineering

YARA Rule

rule CVE_2026_22584_Uni2TS_CodeInjection {
    meta:
        description = "Detects potential code injection attempts targeting Salesforce Uni2TS"
        author = "Valters IT"
        date = "2025-04-17"
        reference = "CVE-2026-22584"
        severity = "critical"
    strings:
        $exec_functions = /exec\(|eval\(|system\(|popen\(|subprocess\./ nocase
        $uni2ts_string = "Uni2TS" nocase
        $file_ext = /\.(conf|dat|cfg|ini)$/ nocase
    condition:
        $uni2ts_string and $exec_functions and $file_ext
}

Sigma Rule

title: CVE-2026-22584 - Code Injection via Uni2TS
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects execution of Uni2TS with suspicious file arguments
author: Valters IT
date: 2025-04-17
references:
    - https://nvd.nist.gov/vuln/detail/CVE-2026-22584
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\uni2ts.exe'
        CommandLine|contains:
            - '.conf'
            - '.dat'
            - '.cfg'
    condition: selection
falsepositives:
    - Legitimate use of Uni2TS with configuration files
level: high

Suricata Rule

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2026-22584 - Uni2TS Potential C2 Traffic"; flow:to_server,established; content:"Uni2TS"; nocase; pcre:"/exec\(|eval\(|system\(/"; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Isolate any systems running Uni2TS version <= 1.2.0 until a patch is available.
2. Restrict execution of Uni2TS to only trusted, read-only directories.
3. Monitor for any suspicious file processing or network connections from Uni2TS.

Long-term Fix:

• Await an official patch from Salesforce. In the interim, consider replacing Uni2TS with an alternative tool that does not have this vulnerability.
• Implement strict input validation and sandboxing for any file processing tools.

Workaround:

• Use a wrapper script that validates file content before passing it to Uni2TS. For example:

  #!/bin/bash
  # Validate file content before processing
  if grep -qE 'exec\(|eval\(|system\(' "$1"; then
      echo "Blocked: Potentially malicious file"
      exit 1
  fi
  uni2ts --process "$1"
  

Valters IT
DevSecOps & Cyber Threat Intelligence