Bakhtior Sattori told RFE/RL in a telephone interview on February 20 that an unknown assailant attacked him near his apartment.
Sattori said he was stabbed in the stomach and face on February 19.
He underwent surgery and doctors say his condition is serious but stable.
Sattori said he has no idea who is behind the attack.
He said the attacker's face was covered but he described the man's eyes as looking "Central Asian."
Sattori, 49, worked at the Tajik Embassy in Moscow before becoming the press secretary of the Tajik Migration Service's representative board in Moscow.
After losing his job last year, Sattori became an active member of an organization called the Training Club of Tajikistan's Future Government.
-- RFE/RL's Tajik Service