CVE-2020-14971

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-23 · updated 2026-06-17
Weakness: CWE-862

Description

Pi-hole through 5.0 allows code injection in piholedhcp (the Static DHCP Leases section) by modifying Teleporter backup files and then restoring them. This occurs in settings.php. To exploit this, an attacker would request a backup of limited files via teleporter.php. These are placed into a .tar.gz archive. The attacker then modifies the host parameter in dnsmasq.d files, and then compresses and uploads these files again.

Affected products

pi-hole: through 5.0

References

https://blog.telspace.co.za/2020/06/pi-hole-code-injection-cve-2020-14971.html
https://github.com/pi-hole/AdminLTE/commit/8f6e1365b6dec0ae1aa0b0b15b102c9133f347e5
https://github.com/pi-hole/AdminLTE/commit/c949516ee15fa6a9b0c8511cc4c4d6b0893f3e69
https://github.com/pi-hole/AdminLTE/pull/1443
https://blog.telspace.co.za/2020/06/pi-hole-code-injection-cve-2020-14971.html
https://github.com/pi-hole/AdminLTE/commit/8f6e1365b6dec0ae1aa0b0b15b102c9133f347e5
https://github.com/pi-hole/AdminLTE/commit/c949516ee15fa6a9b0c8511cc4c4d6b0893f3e69
https://github.com/pi-hole/AdminLTE/pull/1443

Get alerted when CVE-2020-14971 or the next vulnerability affects your stack