CVE-2023-4165Public exploit

Database disclosure via DELETE_STR blind SQL injection

Published Aug 5, 2023 · Updated Oct 10, 2024

SQL injection in Tongda OA before 11.10 allows remote authenticated users to read database contents through crafted DELETE_STR input. The delete_seal.php endpoint accepts SQL expressions in DELETE_STR that alter query execution and expose values through response timing. Exploitation requires low-privileged access from an adjacent network; the published proof of concept extracts database characters with costly Cartesian-product delays.

CVSS severity5.5
Medium
EPSS probability12.30%
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 Tongda OA before 11.10 allows remote authenticated users to read database contents through crafted DELETE_STR input. The delete_seal.php endpoint accepts SQL expressions in DELETE_STR that alter query execution and expose values through response timing. Exploitation requires low-privileged access from an adjacent network; the published proof of concept extracts database characters with costly Cartesian-product delays.

The record

CVE
CVE-2023-4165
Published
Aug 5, 2023
Updated
Oct 10, 2024
Vendor
Beijing Tongda Xinke Technology Co., Ltd.
Product
Tongda OA
Classifications
CWE-89, T1190
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Beijing Tongda Xinke Technology Co., Ltd. · Tongda OAversion=n/a

Published CVSS scores

5.2VulDBAV:A/AC:L/Au:S/C:P/I:P/A:P
5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

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

Weakness, pattern, technique

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

Public exploit references

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Technologies

Your stack

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Your stack

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