From 706ffd8e8ede9617f406e9d9ee5a0d7c8c2eae68 Mon Sep 17 00:00:00 2001
From: NataliaPerez08 <nataliaapr08@gmail.com>
Date: Fri, 28 Aug 2026 22:23:14 -0600
Subject: [PATCH] Handle leading zeros in basic version parsing

---
 netutils/os_version.py         |  4 ++--
 tests/unit/test_os_versions.py | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/netutils/os_version.py b/netutils/os_version.py
index 3edc07f4..8e3574fb 100644
--- a/netutils/os_version.py
+++ b/netutils/os_version.py
@@ -258,9 +258,9 @@ def _basic_version_metadata(version: str) -> t.Dict[str, t.Any]:
     basic_regex: re.Pattern[str] = re.compile(
         r"""
         ^
-        (?P<major>0|[1-9]\d*)
+        0*(?P<major>\d+)
         \.
-        (?P<minor>0|[1-9]\d*)?
+        (?:0*(?P<minor>\d+))?
         .*$
         """,
         re.VERBOSE,
diff --git a/tests/unit/test_os_versions.py b/tests/unit/test_os_versions.py
index e647fd6e..e4a38d89 100755
--- a/tests/unit/test_os_versions.py
+++ b/tests/unit/test_os_versions.py
@@ -50,6 +50,30 @@
             "vendor_metadata": False,
         },
     },
+    {
+        "sent": {"vendor": "cisco", "platform": "ios", "version": "03.03.05SE"},
+        "received": {
+            "major": "3",
+            "minor": "3",
+            "vendor_metadata": False,
+        },
+    },
+    {
+        "sent": {"vendor": "cisco", "platform": "ios", "version": "3.03.05SE"},
+        "received": {
+            "major": "3",
+            "minor": "3",
+            "vendor_metadata": False,
+        },
+    },
+    {
+        "sent": {"vendor": "cisco", "platform": "ios", "version": "3.3.05SE"},
+        "received": {
+            "major": "3",
+            "minor": "3",
+            "vendor_metadata": False,
+        },
+    },
     # Juniper Junos uses a custom parser
     {
         "sent": {"vendor": "juniper", "platform": "junos", "version": "12.4R"},