CVE-2026-9541Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow
Updated under an hour ago ()
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It affects n/a Squirrel and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.3 MEDIUM (v3.1, CNA)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
- Weakness (CWE)
- CWE-122, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- May 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a Squirrel squirrel:squirrel | 3.0; 3.1; 3.2 | CNA record |
squirrel-lang squirrel squirrel-lang:squirrel | through 3.2 | NVD |
References
- https://vuldb.com/vuln/365602vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/vuln/365602/ctisignature, permissions-required, vdb-entry
- https://vuldb.com/submit/814826third-party-advisory, exploit, vdb-entry
- https://github.com/albertodemichelis/squirrel/issues/327issue-tracking, exploit, mitigation, patch
- https://github.com/biniamf/pocs/tree/main/squirrel-sqobject-readobject-neg-len-oobexploit
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.