diff --git a/modules/exploits/osx/local/packagekit_zshenv_privesc.rb b/modules/exploits/osx/local/packagekit_zshenv_privesc.rb
index 799555c81b319..eaf668caf858c 100644
--- a/modules/exploits/osx/local/packagekit_zshenv_privesc.rb
+++ b/modules/exploits/osx/local/packagekit_zshenv_privesc.rb
@@ -81,7 +81,7 @@ def initialize(info = {})
 
   def check
     version = Rex::Version.new(get_system_version)
-
+    
     if version >= Rex::Version.new('14.5')
       CheckCode::Safe("macOS #{version} is patched (fixed in 14.5)")
     elsif version >= Rex::Version.new('14.0')
@@ -95,6 +95,9 @@ def check
     elsif version >= Rex::Version.new('12.0')
       CheckCode::Appears("macOS #{version} is vulnerable")
     else
+      if version < Rex::Version.new("10.14")
+        return CheckCode::Detected("macOS #{version} detected, but zsh does not exists") unless executable?("/bin/zsh") 
+      end
       CheckCode::Appears("macOS #{version} (11 and older) is vulnerable")
     end
   end
@@ -106,6 +109,8 @@ def exploit
     home_dir = create_process('printenv', args: ['HOME']).strip
     fail_with(Failure::BadConfig, 'Unable to determine home directory') if home_dir.blank?
     zshenv_path = "#{home_dir}/.zshenv"
+    
+    fail_with(Failure::Unknown, "The .zshenv is not writable") if exist?(zshenv_path) && !writable?(zshenv_path)
 
     # Preserve original .zshenv so we can restore it after root execution
     original_zshenv = file?(zshenv_path) ? read_file(zshenv_path) : ''