CVE-2023-43683
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-14

Last updated on: 2025-08-15

Assigner: MITRE

Description
An issue was discovered in Malwarebytes 4.6.14.326 and before 5.1.5.116 (and Nebula 2020-10-21 and later). A Stack buffer out-of-bounds access exists because of an integer underflow when handling newline characters.
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Meta Information
Published
2025-08-14
Last Modified
2025-08-15
Generated
2026-05-27
AI Q&A
2025-08-14
EPSS Evaluated
2026-05-25
NVD
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
malwarebytes nebula *
malwarebytes malwarebytes 5.1.5.116
malwarebytes malwarebytes 4.6.14.326
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a stack buffer out-of-bounds access caused by an integer underflow when handling newline characters in Malwarebytes versions 4.6.14.326 and earlier, and before 5.1.5.116, as well as Nebula 2020-10-21 and later. Essentially, the software incorrectly processes newline characters leading to memory access outside the intended buffer boundaries.


How can this vulnerability impact me? :

The vulnerability could lead to unexpected behavior such as crashes or potentially allow an attacker to execute arbitrary code or cause denial of service by exploiting the stack buffer out-of-bounds access.


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