CVE-2026-9541

Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow

Published May 26, 2026 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Squirrel-lang
Squirrel-lang squirrel
CPEs cpe:2.3:a:squirrel-lang:squirrel:*:*:*:*:*:*:*:*
Vendors & Products Squirrel-lang
Squirrel-lang squirrel
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow
First Time appeared Squirrel
Squirrel squirrel
Weaknesses CWE-119
CWE-122
CPEs cpe:2.3:a:squirrel:squirrel:*:*:*:*:*:*:*:*
Vendors & Products Squirrel
Squirrel squirrel
References
Metrics cvssV2_0

{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
May 26, 2026, 3:18 PM
Reserved
May 26, 2026, 5:51 AM
Status
Analyzed
Published
May 26, 2026, 2:16 PM
Modified
Jul 23, 2026, 11:10 AM