diff --git a/core/meta/src/TDataMember.cxx b/core/meta/src/TDataMember.cxx
index 5042525da8d24..cd41dae094b11 100644
--- a/core/meta/src/TDataMember.cxx
+++ b/core/meta/src/TDataMember.cxx
@@ -446,7 +446,12 @@ const char *TDataMember::GetTrueTypeName() const
 
 Longptr_t TDataMember::GetOffset() const
 {
-   if (fOffset>=0) return fOffset;
+   if (Property() & (kIsStatic | kIsEnum)) {
+      Error("GetOffset", "Cannot get offset of static or enum data member %s", GetName());
+      return -1;
+   }
+
+   if (fOffset >= 0) return fOffset;
 
    R__LOCKGUARD(gInterpreterMutex);
    //case of an interpreted or emulated class
@@ -495,13 +500,17 @@ Longptr_t TDataMember::GetOffset() const
 
 Longptr_t TDataMember::GetOffsetCint() const
 {
-   if (fOffset>=0) return fOffset;
+   if (fOffset >= 0) return fOffset;
 
    R__LOCKGUARD(gInterpreterMutex);
    TDataMember *dm = const_cast<TDataMember*>(this);
 
-   if (dm->IsValid()) return gCling->DataMemberInfo_Offset(dm->fInfo);
-   else return -1;
+   if (dm->IsValid()) {
+      Longptr_t offset = gCling->DataMemberInfo_Offset(dm->fInfo);
+      dm->fOffset = offset;
+      return offset;
+   }
+   return -1;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/roottest/root/meta/unit/datamem.cxx b/roottest/root/meta/unit/datamem.cxx
index 5dfc46e95df8c..652c37fa4cf31 100644
--- a/roottest/root/meta/unit/datamem.cxx
+++ b/roottest/root/meta/unit/datamem.cxx
@@ -28,3 +28,21 @@ const int ROOT8499<T>::s_info = ROOT8499<T>::initHelper();");
   EXPECT_NE(0, dm->GetOffsetCint());
 }
 
+TEST(TDataMemberTests, Issue23777)
+{
+   // Test that calling GetOffset() does not corrupt or interfere with GetOffsetCint()
+   TClass *cl = TClass::GetClass("TAttImage");
+   ASSERT_NE(nullptr, cl);
+   TObject *obj = cl->GetListOfDataMembers()->FindObject("kImgBest");
+   ASSERT_NE(nullptr, obj);
+   TDataMember *dm = dynamic_cast<TDataMember *>(obj);
+   ASSERT_NE(nullptr, dm);
+
+   EXPECT_STREQ("TAttImage::EImageQuality", dm->GetTypeName());
+   // Static and enum members do not have an instance offset; GetOffset() must return -1
+   EXPECT_EQ(-1, dm->GetOffset());
+   // GetOffsetCint() must return a non-zero address/offset from Cling even after GetOffset() was called
+   EXPECT_NE(0, dm->GetOffsetCint());
+   // GetOffset() must still return -1 even after GetOffsetCint() cached the address
+   EXPECT_EQ(-1, dm->GetOffset());
+}