Out-of-bounds Read in Squirrel-lang Squirrel
CVE-2021-41556
sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that can lead to Code Execution. If a victim executes an attacker-controlled squirrel script, it is possible for the attacker…
Vulnerability class: Buffer Overflow
EPSS: 0.027 (86.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Squirrel-lang Squirrel
- Fedoraproject Fedora — versions 35, 36
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2021-41556?
- CVE-2021-41556 is a critical-severity vulnerability in Squirrel-lang Squirrel, classified under Out-of-bounds Read. CVSS score: 10.0/10. Published 2022-07-28.
- How severe is CVE-2021-41556?
- Critical severity. CVSS v3 base score is 10.0 out of 10.