diff --git a/supervisor/ingress.py b/supervisor/ingress.py
index 5ff17eadb..3f1220f29 100644
--- a/supervisor/ingress.py
+++ b/supervisor/ingress.py
@@ -72,7 +72,13 @@ class Ingress(JsonConfig, CoreSysAttributes):
 
         sessions = {}
         for session, valid in self.sessions.items():
-            valid_dt = utc_from_timestamp(valid)
+            # check if timestamp valid, to avoid crash on malformed timestamp
+            try:
+                valid_dt = utc_from_timestamp(valid)
+            except OverflowError:
+                _LOGGER.warning("Session timestamp %f is invalid!", valid_dt)
+                continue
+
             if valid_dt < now:
                 continue
 
@@ -103,7 +109,13 @@ class Ingress(JsonConfig, CoreSysAttributes):
         """Return True if session valid and make it longer valid."""
         if session not in self.sessions:
             return False
-        valid_until = utc_from_timestamp(self.sessions[session])
+
+        # check if timestamp valid, to avoid crash on malformed timestamp
+        try:
+            valid_until = utc_from_timestamp(self.sessions[session])
+        except OverflowError:
+            _LOGGER.warning("Session timestamp %f is invalid!", valid_until)
+            return False
 
         # Is still valid?
         if valid_until < utcnow():