CVE-2026-9541: Heap-based Buffer Overflow in Squirrel
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.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the ReadObject function of the Cnut File Handler component in Squirrel versions 3.0 through 3.2. An attacker with local access can manipulate input to cause memory corruption. The issue was reported early to the project but remains unpatched. The exploit code is publicly available, increasing the risk of local exploitation. No official remediation or patch has been released as of the publication date.
Potential Impact
Successful exploitation can lead to heap memory corruption, which may cause application crashes or potentially allow an attacker to execute arbitrary code with local privileges. However, exploitation requires local access and no user interaction is needed. The medium CVSS score reflects these factors and the limited attack vector. There are no known exploits in the wild beyond the public exploit release.
Mitigation Recommendations
No official patch or remediation is currently available from the vendor. Users should restrict local access to trusted users only and monitor for suspicious activity. Since the vendor has not responded or issued a fix, consider applying additional local security controls such as sandboxing or running Squirrel in restricted environments until a patch is released. Check the vendor advisory regularly for updates on remediation.
CVE-2026-9541: Heap-based Buffer Overflow in Squirrel
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.
CVSS v4.0
Score 4.8medium
Affected software
pkg:github/albertodemichelis/squirrelRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the ReadObject function of the Cnut File Handler component in Squirrel versions 3.0 through 3.2. An attacker with local access can manipulate input to cause memory corruption. The issue was reported early to the project but remains unpatched. The exploit code is publicly available, increasing the risk of local exploitation. No official remediation or patch has been released as of the publication date.
Potential Impact
Successful exploitation can lead to heap memory corruption, which may cause application crashes or potentially allow an attacker to execute arbitrary code with local privileges. However, exploitation requires local access and no user interaction is needed. The medium CVSS score reflects these factors and the limited attack vector. There are no known exploits in the wild beyond the public exploit release.
Mitigation Recommendations
No official patch or remediation is currently available from the vendor. Users should restrict local access to trusted users only and monitor for suspicious activity. Since the vendor has not responded or issued a fix, consider applying additional local security controls such as sandboxing or running Squirrel in restricted environments until a patch is released. Check the vendor advisory regularly for updates on remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-26T05:51:28.774Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a15a0f6891d628fdc365f0c
Added to database: 05/26/2026, 13:32:38 UTC
Last enriched: 05/26/2026, 13:48:05 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 80
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