A NetworkManager bugfix update has been released for CentOS 7.

CentOS-announce: CEBA-2020:5025 CentOS 7 NetworkManager BugFix Update

CentOS Errata and Bugfix Advisory 2020:5025

Upstream details at :   https://access.redhat.com/errata/RHBA-2020:5025

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

x86_64:
d309a7bec2af466981338b2729711aca0aac30101fc7b53822baf4eca6bf3bf3 NetworkManager-1.18.8-2.el7_9.x86_64.rpm
c7c905b4d230c3305d7223c1efb2e2c29d90ee0fe667ec5973b84522b52f1b7c NetworkManager-adsl-1.18.8-2.el7_9.x86_64.rpm
b59dc7ffbf0ef066ff9a1cf076ed8bff6d49817bed656cf03853d4c14c19563f NetworkManager-bluetooth-1.18.8-2.el7_9.x86_64.rpm
a3a98ff12318616c1641d6e0d2dadf6e2f268b6bbc34e65924fe720f0ed2b498 NetworkManager-config-server-1.18.8-2.el7_9.noarch.rpm
21113ab4dcd135895d98e51d9d540e8be477abdc44e185a460a9a835e382a7c1 NetworkManager-dispatcher-routing-rules-1.18.8-2.el7_9.noarch.rpm
121ed67b550b9b757c921a1f6eba668e72a8d28d183054b14f8e1d37b81b602b NetworkManager-glib-1.18.8-2.el7_9.i686.rpm
2020ae44e6c85c50fdf7fbfec19d2bbaf6f8395f641b1b48c4743285b9fd8bdc NetworkManager-glib-1.18.8-2.el7_9.x86_64.rpm
3cbf76c62b3dabd78db73ad0e95a34d50022e61f36e7a967aabcc7f9c3f4c6cc NetworkManager-glib-devel-1.18.8-2.el7_9.i686.rpm
d7b21ff17ce56f83ff2000fca6f369f4160b7c039d960862da62ff6aab5c8df3 NetworkManager-glib-devel-1.18.8-2.el7_9.x86_64.rpm
9b6de03afb9e2ed1eb1fe326e14a90ed08a67cee15e148db6d1d484cd4022e4c NetworkManager-libnm-1.18.8-2.el7_9.i686.rpm
366db37e736f288688e2f7de25a2589d720f57d0ee9d9147989b609d9dfea648 NetworkManager-libnm-1.18.8-2.el7_9.x86_64.rpm
80bdac5815e2cb87ffd8f9a1347f373f9a9ced0b8d2fe36ed814bd54f4ef39fa NetworkManager-libnm-devel-1.18.8-2.el7_9.i686.rpm
cbb13427dedac5cf271bc5a5113b736a34f96516510eb972cb3320ae396950fb NetworkManager-libnm-devel-1.18.8-2.el7_9.x86_64.rpm
6a1e8e996df86eab01a9069d9b5a346d8a727e6c633a9f89b1adef59b208e01d NetworkManager-ovs-1.18.8-2.el7_9.x86_64.rpm
bcf2e159d49fe0cc5b342fc05255f862141272c22ce694e38e0133129e1ca198 NetworkManager-ppp-1.18.8-2.el7_9.x86_64.rpm
0d7ee838bc95b1ca0f6653c7bb6bf7f82fd91bddf5008eb108ab46da2a4a15a4 NetworkManager-team-1.18.8-2.el7_9.x86_64.rpm
1eae80c524fc2bc5a90ced35062890a40b5625b866e658c984d2c21a6b84fbda NetworkManager-tui-1.18.8-2.el7_9.x86_64.rpm
96e5936275322903cfbb6baf53a0c7b17d256a8f32f01311f863e027c6f7d955 NetworkManager-wifi-1.18.8-2.el7_9.x86_64.rpm
8376cfa512fe6b2ff76656a962eb9991e84736e4a697d521ce94ef01b76d8224 NetworkManager-wwan-1.18.8-2.el7_9.x86_64.rpm

Source:
f3aae4e16f7867ac7886c77e49c9b3d98ec73dd2ad437b1870e7516f02654614 NetworkManager-1.18.8-2.el7_9.src.rpm