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Fencer Vulns
medium 6.3

CVE-2021-29449 json

Multiple Privilege Escalation Vulnerabilities Pihole

published 2021-04-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-16066

cvss
6.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
1
Metasploit

Summary

Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. Multiple privilege escalation vulnerabilities were discovered in version 5.2.4 of Pi-hole core. See the referenced GitHub security advisory for details.

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/linux/local/pihole_remove_commands_lpe)

Exploit prediction

1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/linux/local/pihole_remove_commands_lpe Pi-Hole Remove Commands Linux Priv Esc metasploit exploit, great rank, 2021-04-20
  • github.com https://github.com/pi-hole/pi-hole/security/advisories/GHSA-3597-244c-wrpj referenced PoC, tagged "exploit" by a source, unverified
  • compass-security.com https://www.compass-security.com/fileadmin/Research/Advisories/2021-02_CSNC-2021-008_Pi-hole_Privilege_Escalation.txt referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/163715/Pi-Hole-Remove-Commands-Linux-Privilege-Escalation.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • pi-hole pi-hole

Classification

Weakness
  • CWE-269 Improper Privilege Management
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.