CVE-2021-43969Public exploitNetwork attack vector

Database disclosure via unsanitized username parameter

Published Mar 7, 2022 · Updated Aug 4, 2024

SQL injection in Quicklert for Digium Switchvox Version 10 builds before 1051 allows remote attackers to read its database via login.jsp. The login.jsp uname parameter reaches an MSSQL query without adequate sanitization, enabling time delays or master.xp_dirtree DNS callbacks to reveal query results. No authentication is required, and repeated inference or DNS exfiltration exposes all database records, including administrative login IDs and passwords.

CVSS severity6.5
Medium
EPSS probability1.51%
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 Quicklert for Digium Switchvox Version 10 builds before 1051 allows remote attackers to read its database via login.jsp. The login.jsp uname parameter reaches an MSSQL query without adequate sanitization, enabling time delays or master.xp_dirtree DNS callbacks to reveal query results. No authentication is required, and repeated inference or DNS exfiltration exposes all database records, including administrative login IDs and passwords.

The record

CVE
CVE-2021-43969
Published
Mar 7, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190, T1212
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDAV:N/AC:L/Au:N/C:C/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application
T1212Exploitation for Credential Access

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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