CVE-2023-4740
CWE-89Published: September 3, 2023· Updated: Jun 17, 2026
Official Description
A vulnerability, which was classified as critical, was found in IBOS OA 4.5.5. This affects an unknown part of the file ?r=email/api/delDraft&archiveId=0 of the component Delete Draft Handler. The manipulation leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-238629 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Technical Analysis
CVE-2023-4740 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.
From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-89)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-4740 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts