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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.

PUBLISHED Reserved 2026-05-26 | Published 2026-05-26 | Updated 2026-05-26 | Assigner VulDB




MEDIUM: 4.8CVSS: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
MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Heap-based Buffer Overflow

Memory Corruption

Timeline

2026-05-26:Advisory disclosed
2026-05-26:VulDB entry created
2026-05-26:VulDB entry last update

Credits

biniam (VulDB User) reporter

VulDB CNA Team coordinator

References

github.com/albertodemichelis/squirrel/issues/327 exploit

vuldb.com/vuln/365602 (VDB-365602 | Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow) vdb-entry technical-description

vuldb.com/vuln/365602/cti (VDB-365602 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/814826 (Submit #814826 | albertodemichelis squirrel 3.2 Heap-based Buffer Overflow) third-party-advisory

github.com/albertodemichelis/squirrel/issues/327 issue-tracking

github.com/.../main/squirrel-sqobject-readobject-neg-len-oob exploit

cve.org (CVE-2026-9541)

nvd.nist.gov (CVE-2026-9541)

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