SecuriTricks - CVE-2023-43683

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.

Product(s) Impacted

Vendor	Product	Versions
Malwarebytes	Malwarebytes Nebula	4.6.14.326, <5.1.5.116 2020-10-21

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-121

Stack-based Buffer Overflow

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).

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	malwarebytes	malwarebytes	4.6.14.326	/	/	/	/	/	/	/
a	malwarebytes	malwarebytes	<5.1.5.116	/	/	/	/	/	/	/
a	malwarebytes	nebula	2020-10-21	/	/	/	/	/	/	/

References

https://www.malwarebytes.com/secure/cves/cve-2023-43683

CVSS Score

6.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

View Vector String

Timeline

Published: Aug. 14, 2025, 5:15 p.m.
Last Modified: Aug. 15, 2025, 5:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

CVE-2023-43683