A vehicular control apparatus used in an onboard system having a plurality of information processors mutually connected via a communication bus, comprising: a storage section for storing information; and an arithmetic section for executing a process based on the information stored in the storage section, wherein: the information contains first management information relating to a security abnormality as a communication data abnormality owing to security attack from outside the onboard system, and second management information relating to a safety abnormality as a communication data abnormality owing to an abnormality in the onboard system; the first management information contains first limit condition information indicating a first limit condition for executing a security coping with the security abnormality; the second management information contains second limit condition information indicating a second limit condition for executing a safety coping with the safety abnormality; and if the communication data abnormality in the onboard system is detected, the arithmetic section determines a coping content to the detected communication data abnormality based on the first management information and the second management information; wherein: the first limit condition includes a first time required for executing the security coping; the second limit condition includes a second time which is allowed when executing the safety coping, and a third time required for executing the safety coping; and if both the security abnormality and the safety abnormality are detected, the arithmetic section determines the coping content based on the first time, the second time, and the third time; wherein the arithmetic section obtains a total value of the first time and the third time, and determines the coping content based on a result of comparison between the total value and the second time; wherein the arithmetic section determines the coping content to prioritize execution of the safety coping if the total value is larger than the second time, and to prioritize execution of the security coping if the total value is equal to or smaller than the second time. a storage section for storing information; and an arithmetic section for executing a process based on the information stored in the storage section, wherein: the information contains first management information relating to a security abnormality as a communication data abnormality owing to security attack from outside the onboard system, and second management information relating to a safety abnormality as a communication data abnormality owing to an abnormality in the onboard system; the first management information contains first limit condition information indicating a first limit condition for executing a security coping with the security abnormality; the second management information contains second limit condition information indicating a second limit condition for executing a safety coping with the safety abnormality; and if the communication data abnormality in the onboard system is detected, the arithmetic section determines a coping content to the detected communication data abnormality based on the first management information and the second management information; the information contains first management information relating to a security abnormality as a communication data abnormality owing to security attack from outside the onboard system, and second management information relating to a safety abnormality as a communication data abnormality owing to an abnormality in the onboard system; the first management information contains first limit condition information indicating a first limit condition for executing a security coping with the security abnormality; the second management information contains second limit condition information indicating a second limit condition for executing a safety coping with the safety abnormality; and if the communication data abnormality in the onboard system is detected, the arithmetic section determines a coping content to the detected communication data abnormality based on the first management information and the second management information; the first limit condition includes a first time required for executing the security coping; the second limit condition includes a second time which is allowed when executing the safety coping, and a third time required for executing the safety coping; and if both the security abnormality and the safety abnormality are detected, the arithmetic section determines the coping content based on the first time, the second time, and the third time; wherein the arithmetic section obtains a total value of the first time and the third time, and determines the coping content based on a result of comparison between the total value and the second time; wherein the arithmetic section determines the coping content to prioritize execution of the safety coping if the total value is larger than the second time, and to prioritize execution of the security coping if the total value is equal to or smaller than the second time.