CVE-2026-9541

MEDIUM

Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow

Title source: cna
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-365602 | Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow
https://vuldb.com/vuln/365602
Signature, Permissions Required signature permissions-required
VDB-365602 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/365602/cti
Third Party Advisory third-party-advisory
Submit #814826 | albertodemichelis squirrel 3.2 Heap-based Buffer Overflow
https://vuldb.com/submit/814826

Scores

CVSS v3 5.3
EPSS 0.0014
EPSS Percentile 3.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-122
Status published
Products (4)
None/Squirrel 3.0
None/Squirrel 3.1
None/Squirrel 3.2
squirrel-lang/squirrel < 3.2
Published May 26, 2026
Tracked Since May 26, 2026