The core idea
Refinancing risk is the possibility that maturing debt must be replaced at materially higher rates or under difficult market conditions.
What is happening underneath
It becomes especially important when a large amount of low-coupon debt matures after market yields have risen.
How investors should read it
The maturity profile can therefore matter more than the average interest cost visible today.
The same market move can carry different information depending on which maturity, issuer and risk premium is changing. Read the question together with the underlying concepts rather than treating one price move as a universal signal.