CVE-2022-4634

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

All versions prior to Delta Electronic’s CNCSoft version 1.01.34 (running ScreenEditor versions 1.01.5 and prior) are vulnerable to a stack-based buffer overflow, which could allow an attacker to remotely execute arbitrary code.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation CNCSoft. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of DPB files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Simon Humbert, working with Trend Micro Zero Day Initiative

CVSS Scores

NISTv3.1 7.8

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-12-21 CVE Reserved
2023-02-02 CVE Published
2024-08-03 CVE Updated
2024-09-23 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.cisa.gov/uscert/ics/advisories/icsa-23-026-01	2023-11-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Deltaww Search vendor "Deltaww"		Cncsoft Search vendor "Deltaww" for product "Cncsoft"				< 1.01.34 Search vendor "Deltaww" for product "Cncsoft" and version " < 1.01.34"		-		Affected
Deltaww Search vendor "Deltaww"		Screeneditor Search vendor "Deltaww" for product "Screeneditor"				< 1.01.5 Search vendor "Deltaww" for product "Screeneditor" and version " < 1.01.5"		-		Affected