A libexif security update has been released for CentOS 7.

CESA-2020:5402 Important CentOS 7 libexif Security Update

CentOS Errata and Security Advisory 2020:5402 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:5402

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
3bb0da4f1c883b5aaa0ad687bcc2022ba9573d912ff906b6657bc7e96676c5d9 libexif-0.6.22-2.el7_9.i686.rpm
49776569805f34f9417a664fb394e7bff8444fee386100309ce6306cba1c8b1a libexif-0.6.22-2.el7_9.x86_64.rpm
6dafcb9ecc7ca14a4ae5417e71c1fee10a7213e0ebf3d3750cbd23a8cacf5eef libexif-devel-0.6.22-2.el7_9.i686.rpm
618179611cd44ba685db172d3afd1dc0248e66533a35b8e46cdf118d812340d3 libexif-devel-0.6.22-2.el7_9.x86_64.rpm
0c9cd97e333e5ea85907e92483ef91dbdb08349b7e29916dcf5c08061c74f836 libexif-doc-0.6.22-2.el7_9.x86_64.rpm

Source:
3729ce39ae2b4b5ca93513cb15046a4b55ada0662f3ee6888927e6caad3f5709 libexif-0.6.22-2.el7_9.src.rpm