"Syrian troops entered Lebanese territory today and opened fire on the village of Khirbat Daoud in Aarsal," said Bakr Hujairi of Aarsal municipality, in a border region that has witnessed deadly gunfire in recent months.
Hujairi identified the those wounded as Khaled and Mohammed al-Fleeti, adding that they had been transferred to a nearby stable where their condition was stable.
At least three people have been killed since October as Syrian troops staging incursions into Lebanon opened fire on border villages.
Lebanon's Western-backed opposition, Washington and the United Nations have condemned the incursions.
But the Lebanese government, largely dominated by Hezbollah, a strong ally of the Syrian regime, has for the most part stayed silent on the issue.
Lebanon and Syria share a 330-kilometre (205-mile) border but have yet to agree on official demarcation.
Syria has also planted land mines along its border with Lebanon in a bid to prevent weapons smuggling and dissidents from fleeing a fierce crackdown by the regime in Damascus against a nine-month revolt.
Beirut is bitterly divided between pro- and anti-Damascus camps, and there are growing fears the bloodshed in Syria could spill over the border.