CVE-2026-9541CWE-119CWE-122

Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow

Medium · published May 26, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
8.3
In the wild
Unconfirmed
What it is

A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00191 · 8.3th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-122 · Heap-based Buffer Overflow
Published
2026-05-26T11:45Z
EPSS history
Timeline
  • 26 MAY 11:45Z
    Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow
    cvelistv5