NOTTINGHAM FOREST: Smith, Gunter, Chambers, Morgan, Cohen, Anderson (McGoldrick 79), McKenna, Majewski, Davies (Tyson 67), Blackstock, Earnshaw (Adebola 79). Subs Not Used: Camp, Garner, Mitchell, Fairclough.
BORO: Coyne, Hoyte, Wheater, Huth, Taylor, Yeates, Williams, Arca (Bennett 106), Adam Johnson, Aliadiere (McMahon 83), Emnes (Lita 65). Subs Not Used: Steele, Grounds, Hines, Franks.
Radoslaw Majewski's first Nottingham Forest goal saw the east midlands club progress to the Carling Cup third round for the first time in five years as Coca-Cola Championship rivals Middlesbrough lost their unbeaten start to the season at the City Ground.
The Poland international, on loan from Groclin, struck towards the end of the first period of extra time for the four-time winners of the League Cup.
In normal time, Luke Chambers cancelled out Adam Johnson's opening goal for the visitors.
Boro, whose triumph in this competition in 2004 remains the club's only major trophy in its 133-year history, created the better early chances.
Paul Smith produced a good early save to keep out Jeremie Aliadiere's low shot before Julio Arca's follow-up was deflected wide.
Johnson worked Smith again with a shot from the right side of the box and Aliadiere outfoxed two defenders on the opposite side but dragged his shot into the side-netting.
Forest's first chance arrived after half an hour when Dexter Blackstock and Robert Earnshaw combined but the latter drilled his shot wide.
Johnson scored two minutes before the break to hand Boro a deserved lead.
Marvin Emnes played Johnson in on the left side of the box and the England Under-21 international beat Smith at the near post. The Forest keeper will feel he should have done better.
Aliadiere could have extended Boro's lead at the start of the second half but blazed his shot high and wide.
It proved to be a costly miss as Chambers equalised after an hour.
The defender turned Majewski's corner into the net with a brilliant piece of improvisation beating Danny Coyne with a deft backheel.
Leroy Lita almost got on the end of a teasing Johnson cross midway through the second half but the ball skidded off the greasy surface and just beyond his outstretched leg.
Lita had another chance to win it in the fifth of six added minutes at the end of normal time as the visitors broke on the counter-attack but a Forest defender managed to get back and save the day with a superb block.
Forest created the better chances in extra time. Dele Adebola and Blackstock went close with headers in the first period.
Majewski then steered Adebola's cross in at the near post in the 103rd minute.
Only a superb save from Coyne denied the Pole another goal at the start of the second period.
Boro pressed for an equaliser but the closest they came was a shot from Arca that bobbled just wide.
BORO v FOREST - THE HISTORY
2009/2010 Tue 25 Aug Nottm. Forest 2 - 1 Middlesbrough League Cup
after extra time, 90 minutes 1-1
1998/1999 Sat 20 Mar Nottm. Forest 1 - 2 Middlesbrough Premiership
Sun 01 Nov Middlesbrough 1 - 1 Nottm. Forest Premiership
1997/1998 Sun 01 Mar Nottm. Forest 4 - 0 Middlesbrough League Division One
Wed 26 Nov Middlesbrough 0 - 0 Nottm. Forest League Division One
1996/1997 Mon 24 Mar Middlesbrough 1 - 1 Nottm. Forest Premiership
Sat 24 Aug Nottm. Forest 1 - 1 Middlesbrough Premiership
1995/1996 Sat 16 Mar Middlesbrough 1 - 1 Nottm. Forest Premiership
Sat 30 Dec Nottm. Forest 1 - 0 Middlesbrough Premiership
1993/1994 Sat 02 Apr Middlesbrough 2 - 2 Nottm. Forest League Division One
Mon 27 Dec Nottm. Forest 1 - 1 Middlesbrough League Division One
1992/1993 Sat 20 Feb Middlesbrough 1 - 2 Nottm. Forest Premier League
Wed 03 Feb Middlesbrough 0 - 3 Nottm. Forest F.A. Cup
Sat 23 Jan Nottm. Forest 1 - 1 Middlesbrough F.A. Cup
Wed 21 Oct Nottm. Forest 1 - 0 Middlesbrough Premier League
1988/1989 Sat 22 Apr Middlesbrough 3 - 4 Nottm. Forest First Division
Sat 03 Dec Nottm. Forest 2 - 2 Middlesbrough First Division
1981/1982 Sat 27 Feb Nottm. Forest 1 - 1 Middlesbrough First Division
Sat 10 Oct Middlesbrough 1 - 1 Nottm. Forest First Division
1980/1981 Tue 03 Mar Nottm. Forest 1 - 0 Middlesbrough First Division
Sat 06 Sep Middlesbrough 0 - 0 Nottm. Forest First Division
1979/1980 Sat 26 Apr Middlesbrough 0 - 0 Nottm. Forest First Division
Sat 16 Feb Nottm. Forest 2 - 2 Middlesbrough First Division
Tue 25 Sep Middlesbrough 1 - 3 Nottm. Forest League Cup
1978/1979 Sat 03 Feb Middlesbrough 1 - 3 Nottm. Forest First Division
Sat 23 Sep Nottm. Forest 2 - 2 Middlesbrough First Division
1977/1978 Wed 29 Mar Middlesbrough 2 - 2 Nottm. Forest First Division
Sat 29 Oct Nottm. Forest 4 - 0 Middlesbrough First Division
1973/1974 Sat 02 Feb Nottm. Forest 5 - 1 Middlesbrough Second Division
Sat 15 Dec Middlesbrough 1 - 0 Nottm. Forest Second Division
1972/1973 Sat 14 Apr Nottm. Forest 1 - 3 Middlesbrough Second Division
Sat 09 Dec Middlesbrough 0 - 0 Nottm. Forest Second Division
1956/1957 Sat 23 Mar Middlesbrough 2 - 2 Nottm. Forest Second Division
Sat 10 Nov Nottm. Forest 0 - 4 Middlesbrough Second Division
1955/1956 Sat 17 Mar Nottm. Forest 2 - 4 Middlesbrough Second Division
Sat 05 Nov Middlesbrough 3 - 2 Nottm. Forest Second Division
1954/1955 Wed 15 Sep Nottm. Forest 4 - 2 Middlesbrough Second Division
Wed 08 Sep Middlesbrough 1 - 4 Nottm. Forest Second Division
1946/1947 Wed 12 Feb Middlesbrough 6 - 2 Nottm. Forest F.A. Cup
Sat 08 Feb Nottm. Forest 2 - 2 Middlesbrough F.A. Cup
1937/1938 Sat 22 Jan Nottm. Forest 1 - 3 Middlesbrough F.A. Cup
1928/1929 Sat 20 Apr Middlesbrough 1 - 0 Nottm. Forest Second Division
Sat 08 Dec Nottm. Forest 1 - 1 Middlesbrough Second Division
1926/1927 Sat 05 Mar Middlesbrough 1 - 0 Nottm. Forest Second Division
Sat 16 Oct Nottm. Forest 4 - 3 Middlesbrough Second Division
1925/1926 Sat 13 Mar Nottm. Forest 1 - 0 Middlesbrough Second Division
Sat 31 Oct Middlesbrough 1 - 0 Nottm. Forest Second Division
1923/1924 Sat 13 Oct Nottm. Forest 3 - 1 Middlesbrough First Division
Sat 06 Oct Middlesbrough 5 - 2 Nottm. Forest First Division
1922/1923 Mon 02 Apr Middlesbrough 4 - 0 Nottm. Forest First Division
Fri 30 Mar Nottm. Forest 2 - 1 Middlesbrough First Division
1910/1911 Mon 02 Jan Middlesbrough 2 - 2 Nottm. Forest First Division
Tue 27 Dec Nottm. Forest 1 - 1 Middlesbrough First Division
1909/1910 Sat 19 Mar Nottm. Forest 0 - 1 Middlesbrough First Division
Sat 06 Nov Middlesbrough 2 - 1 Nottm. Forest First Division
1908/1909 Sat 24 Apr Nottm. Forest 4 - 1 Middlesbrough First Division
Sat 19 Dec Middlesbrough 4 - 0 Nottm. Forest First Division
1907/1908 Sat 04 Jan Middlesbrough 1 - 1 Nottm. Forest First Division
Sat 07 Sep Nottm. Forest 0 - 3 Middlesbrough First Division
1905/1906 Sat 27 Jan Nottm. Forest 2 - 1 Middlesbrough First Division
Sat 23 Sep Middlesbrough 2 - 0 Nottm. Forest First Division
1904/1905 Sat 04 Mar Middlesbrough 0 - 0 Nottm. Forest First Division
Sat 24 Dec Nottm. Forest 1 - 1 Middlesbrough First Division
1903/1904 Sat 23 Apr Nottm. Forest 1 - 1 Middlesbrough First Division
Sat 26 Dec Middlesbrough 1 - 1 Nottm. Forest First Division
1902/1903 Sat 28 Mar Middlesbrough 2 - 0 Nottm. Forest First Division
Sat 29 Nov Nottm. Forest 1 - 0 Middlesbrough First Division