FRITZ!OS before 7.21 on FRITZ!Box devices allows a bypass of a DNS Rebinding protection mechanism.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26887
Reference (s):
- http://packetstormsecurity.com/files/159606/FRITZ-Box-7.20-DNS-Rebinding-Protection-Bypass.html
- https://en.avm.de/news/
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses