No. According to a fatwa by the Islamic Religious Council of Singapore (Muis), CPF nomination is a valid form of hibah (gift). Thus, when a nomination has been made, only the nominee(s) is entitled to the CPF savings. A Faraid heir who has not been nominated does not have a legal claim over the CPF savings.

However, in this kind of situation, it is encouraged for the sole nominee of the CPF monies to gift some to other family members who needs the money.

This is explained in the Quran:

وَإِذَا حَضَرَ الْقِسْمَةَ أُولُو الْقُرْبَىٰ وَالْيَتَامَىٰ وَالْمَسَاكِينُ فَارْزُقُوهُم مِّنْهُ وَقُولُوا لَهُمْ قَوْلًا مَّعْرُوفًا

And when [other] relatives and orphans and the needy are present at the [time of] division, then provide for them [something] out of the estate and speak to them words of appropriate kindness. (Surah an-Nisa 4: 8)

For the full text of the fatwa, visit: https://www.muis.gov.sg/officeofthemufti/Fatwa/CPF-Nomination/