Brooke Mueller -- On the War Path Over Naked Pics

Brooke Mueller is placing all media outlets on notice ... publish her naked photos and she'll SUE YOUR PANTS OFF!!!

Sources close to Charlie Sheen's ex-wife tell TMZ, she's FURIOUS someone is attempting to sell her intimate photos to the media -- and if anyone tries to publish them, she has promised to file a lawsuit so fast their head will spin.

As for the veracity of the pics -- we're told Brooke knows they're real ... because she took them for an ex-boyfriend.

TMZ broke the story ... Brooke believes a former disgruntled assistant is responsible for swiping the pics ... and now, Brooke's saying she plans to enforce a confidentiality agreement the assistant signed in order to bring the assistant to justice.