VDB-235523 · CVE-2023-38627 · ZDI-23-1001

Trend Micro Apex Central modTXSO server-side request forgery

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Trend Micro Apex Central. This affects an unknown part of the component modTXSO. The manipulation leads to server-side request forgery. This vulnerability is listed as CVE-2023-38627. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Trend Micro Apex Central (affected version unknown). This issue affects an unknown functionality of the component modTXSO. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A post-authenticated server-side request forgery (SSRF) vulnerability in Trend Micro Apex Central 2019 (lower than build 6481) could allow an attacker to interact with internal or local services directly. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. This is a similar, but not identical vulnerability as CVE-2023-38626.

The weakness was presented 07/26/2023 as ZDI-23-1001. It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2023-38627 since 07/20/2023. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/22/2025).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-42426). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Trend Micro

Name

Apex Central

License

commercial

Website

Vendor: https://www.trendmicro.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/20/2023 🔍
07/26/2023 +6 days 🔍
07/26/2023 +0 days 🔍
12/22/2025 +880 days 🔍

Sourcesinfo

Vendor: trendmicro.com

Advisory: ZDI-23-1001
Status: Confirmed

CVE: CVE-2023-38627 (🔍)
GCVE (CVE): GCVE-0-2023-38627
GCVE (VulDB): GCVE-100-235523
EUVD: 🔍

Entryinfo

Created: 07/26/2023 22:10
Updated: 12/22/2025 15:50
Changes: 07/26/2023 22:10 (38), 06/21/2025 08:16 (16), 12/22/2025 15:50 (13)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.