In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while parsing EXIF data with exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of uninitialized memory. This could potentially lead to information disclosure or crash.
Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:LI:NA:L6.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:LMemory Safety