Attack on the Cyrillia system

During the invasion of the galaxy by the intergalactic Yuuzhan Vong species between 25 ABY and 29 ABY, the Vong attacked the Cyrillia system within The Slice. The battle took place some time between the years 26 ABY and 27 ABY and the Vong reached the system by travelling from the Vong controlled world of Gyndine which they had reached after a previous attack on the Prindaar system.

Behind the scenes
The attack on the Cyrillia system was first shown in The Essential Atlas, a reference book released in 2009 and written by Jason Fry and Daniel Wallace. The attack is not mentioned in the text of the book but is shown on a map detailing conflicts in the galaxy somewhen between 26 ABY and 27 ABY during the Yuuzhan Vong War, which was called "collapse of the Core". No information is given about the outcome of the attack although a separate map shows Cyrillia was under Vong control by 27 ABY.