CVE-2020-12620
CVE-2020-12620 is a high-severity vulnerability in Pi-hole with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 2% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Pi-hole
- Published:
- Last modified:
Description
Pi-hole 4.4 allows a user able to write to /etc/pihole/dns-servers.conf to escalate privileges through command injection (shell metacharacters after an IP address).
Frequently asked questions
- What is CVE-2020-12620?
- Pi-hole 4.4 allows a user able to write to /etc/pihole/dns-servers.conf to escalate privileges through command injection (shell metacharacters after an IP address).
- How severe is CVE-2020-12620?
- CVE-2020-12620 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-12620 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-12620?
- CVE-2020-12620 affects Pi-hole. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-12620?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-12620 published?
- CVE-2020-12620 was published on 2020-07-30 and last updated on 2026-06-17.
References
- https://0xpanic.github.io/2020/07/21/Pihole.html
- https://github.com/pi-hole/pi-hole
- https://pi-hole.net/
Affected products (1)
- cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:*
More vulnerabilities in Pi-hole
- CVE-2025-34087 — High (CVSS 8.8): An authenticated command injection vulnerability exists in Pi-hole versions up to 3.3. When adding a domain to the…
- CVE-2020-11108 — High (CVSS 8.8): The Gravity updater in Pi-hole through 4.4 allows an authenticated adversary to upload arbitrary files. This can be…
- CVE-2019-13051 — High (CVSS 8.8): Pi-Hole 4.3 allows Command Injection.
- CVE-2024-34361 — High (CVSS 8.5): Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. A…
- CVE-2020-14162 — High (CVSS 7.8): An issue was discovered in Pi-Hole through 5.0. The local www-data user has sudo privileges to execute the pihole core…
- CVE-2020-14971 — High (CVSS 7.8): Pi-hole through 5.0 allows code injection in piholedhcp (the Static DHCP Leases section) by modifying Teleporter backup…
Other CWE-78 (OS Command Injection) vulnerabilities
- CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
- CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
- CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
- CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
- CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
- CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…