Jermaine Beckford struck a minute from time to snatch victory for Leeds and take his side to within seven points of a positive total in League One.
Tresor Kandol gave the visitors the perfect start when he turned and fired into the far corner but Kris Commons equalised when his free-kick crept in.
However, Beckford wrapped it up with a neat goal from Jonathan Howson's cross.
It is now three League One wins out of three for Dennis Wise's side as they bid to wipe out their 15-point deficit.
Nottm Forest: Smith, Chambers, Wilson, Morgan, Bennett, Perch, Lennon, Clingan, Commons (Bastians 78), Holt, Agogo (Tyson 74).
Subs Not Used: Roberts, Sinclair, Thornhill.
Booked: Bennett.
Goals: Commons 50.
Leeds: Ankergren, Richardson, Heath, Marques, Clapham, Prutton (Flo 62), Douglas, Thompson (Howson 84), Carole, Kandol, Beckford (Parker 90).
Subs Not Used: Bayly, Gardner.
Booked: Thompson, Beckford.
Goals: Kandol 17, Beckford 89.
Att: 25,237
Ref: Keith Hill (Hertfordshire).
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