The security forces killed 9 Taliban militants and wounded 3 others during the clashes in Zabul and Logar provinces, the Afghan military said.
The 205th Atal Corps in a statement said the Taliban militants were planning to attack the security posts in Arghandab district of Zabul province on Wednesday.
The statement further added that the security forces conducted airstrikes in self-defense, killing 7 Taliban militants and wounding 3 others.
The 203rd Thunder Corps in a statement said the Taliban militants attacked the security posts in Qala-e Elyas, located in the outskirts of the provincial capital of Logar province.
The security forces repulsed the attack and killed 2 Taliban militants during the clash, the 203rd Thunder Corps added in its statement.
The statement also added that the security forces discovered and defused 18 improvised explosive devices during the operations in Paktiya, Wardak adn Khost provinces.
The Taliban group has not commented regarding the clashes so far.