BusyBox AWK evaluate() stack overflow DoS
CVE-2026-38752 Published on July 15, 2026
A stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.
Vulnerability Analysis
CVE-2026-38752 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Types
What is a Stack Exhaustion Vulnerability?
The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.
CVE-2026-38752 has been classified to as a Stack Exhaustion vulnerability or weakness.
What is a Stack Overflow Vulnerability?
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).
CVE-2026-38752 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-38752
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Affected Versions
BusyBox:- Version 1.00, <= 1.38.0 is affected.