Sim, Bulgária e Romênia aceitam uniliteralmente os titulares de vistos Schengen para visitar seus países sem a necessidade de um visto adicional:
Visa-free regime for holders of Schengen visas for a stay of up to 90 days
On 25 January 2012 the Council of Ministers of the Republic of Bulgaria adopted a decision according to which by the date of Bulgaria’s accession to the Schengen area, our country will unilaterally apply a visa-free system for holders of valid Schengen visas. They will have the right to enter and reside in the Republic of Bulgaria for a period of no more than three months in any six-month period from the date of the first entry, without needing to have a Bulgarian short-stay visa. The decision entered into force on 31.01.2012.
V. Do I need a visa?
1. YES
...
- NO
...
The holders of Schengen visas with two or multiple entries, national visas or residence permits issued by Schengen Member States.
Attention! The number of entries as well as the right of stay established as per the Schengen visas must not have been exhausted. The right of stay on the territory of Romania shall not exceed the right of stay granted as per the visas/residence permits issued by the Schengen Member States. The holders of permanent residence permits issued by the UK or Ireland. The right of stay on the territory of Romania shall not exceed the right of stay granted as per such residence permits.