pfSense

The following patch can be applied to correct the issue:

diff --git a/src/usr/local/www/services_wol.php b/src/usr/local/www/services_wol.php
index 83014d78a1..f6d14828c9 100644
--- a/src/usr/local/www/services_wol.php
+++ b/src/usr/local/www/services_wol.php
@@ -69,7 +69,7 @@ if ($_POST['Submit'] || $_POST['mac']) {

     if ($_POST['mac']) {
         /* normalize MAC addresses - lowercase and convert Windows-ized hyphenated MACs to colon delimited */
-        $mac = strtolower(str_replace("-", ":", $_POST['mac']));
+        $mac = strtolower(str_replace("-", ":", urldecode($_POST['mac'])));
         $if = $_POST['if'];
     }

@@ -193,7 +193,7 @@ print $form;
                                 <?=htmlspecialchars(convert_friendly_interface_to_friendly_descr($wolent['interface']));?>
                             </td>
                             <td>
-                                <a href="?mac=<?=$wolent['mac'];?>&amp;if=<?=urlencode($wolent['interface']);?>" usepost><?=strtolower($wolent['mac']);?></a>
+                                <a href="?mac=<?=urlencode($wolent['mac']);?>&amp;if=<?=urlencode($wolent['interface']);?>" usepost><?=strtolower($wolent['mac']);?></a>
                             </td>
                             <td>
                                 <?=htmlspecialchars($wolent['descr']);?>
@@ -201,7 +201,7 @@ print $form;
                             <td>
                                 <a class="fa-solid fa-pencil"    title="<?=gettext('Edit Device')?>"    href="services_wol_edit.php?id=<?=$i?>"></a>
                                 <a class="fa-solid fa-trash-can"    title="<?=gettext('Delete Device')?>" href="services_wol.php?act=del&amp;id=<?=$i?>" usepost></a>
-                                <a class="fa-solid fa-power-off" title="<?=gettext('Wake Device')?>" href="?mac=<?=$wolent['mac'];?>&amp;if=<?=urlencode($wolent['interface']);?>" usepost></a>
+                                <a class="fa-solid fa-power-off" title="<?=gettext('Wake Device')?>" href="?mac=<?=urlencode($wolent['mac']);?>&amp;if=<?=urlencode($wolent['interface']);?>" usepost></a>
                             </td>
                         </tr>
                     <?php endforeach?>
diff --git a/src/usr/local/www/widgets/widgets/wake_on_lan.widget.php b/src/usr/local/www/widgets/widgets/wake_on_lan.widget.php
index 252fc9ad51..3a9f28e556 100644
--- a/src/usr/local/www/widgets/widgets/wake_on_lan.widget.php
+++ b/src/usr/local/www/widgets/widgets/wake_on_lan.widget.php
@@ -129,7 +129,7 @@ if (count($wolcomputers) > 0):
         <?php endif; ?>
             </td>
             <td>
-                <a href="services_wol.php?mac=<?= $wolent['mac'] ?>&amp;if=<?= urlencode($wolent['interface']) ?>" usepost>
+                <a href="services_wol.php?mac=<?= urlencode($wolent['mac']) ?>&amp;if=<?= urlencode($wolent['interface']) ?>" usepost>
                 <i class="fa-solid fa-power-off" data-toggle="tooltip" title="<?= gettext("Wake up!") ?>"></i>
                 </a>
             </td>