CVE-2021-4276Network attack vector

Authenticated SQL injection via filesystem path names

Published Dec 25, 2022 · Updated Apr 14, 2025

SQL injection in DNS-STATS Hedgehog allows remote authenticated users to alter database queries through crafted Data Manager directory names. In DSCIOManager::dsc_import_input_from_source, server and node names derived from filesystem paths flow unescaped into raw SQL queries. Reachability requires high-privileged access to create a directory on the Data Manager server, and the maintainer disputes feasibility without server compromise.

CVSS severity4.1
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in DNS-STATS Hedgehog allows remote authenticated users to alter database queries through crafted Data Manager directory names. In DSCIOManager::dsc_import_input_from_source, server and node names derived from filesystem paths flow unescaped into raw SQL queries. Reachability requires high-privileged access to create a directory on the Data Manager server, and the maintainer disputes feasibility without server compromise.

The record

CVE
CVE-2021-4276
Published
Dec 25, 2022
Updated
Apr 14, 2025
Vendor
DNS-STATS
Product
Hedgehog
Classifications
CWE-89
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 58922c345d3d1fe89bb2020111873a3e07ca93ac

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

DNS-STATS · Hedgehogversion=before 58922c345d3d1fe89bb2020111873a3e07ca93ac

Published CVSS scores

4.1VulDBCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
4.1VulDBCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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