PT-2026-43246 · Squirrel · Squirrel

Biniam · Published 2026-05-26 · Updated 2026-05-27 · CVE-2026-9541

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions Squirrel versions prior to 3.3

Description A heap-based buffer overflow occurs in the Cnut File Handler component within the ReadObject() function of the squirrel/sqobject.cpp file. This issue allows a local attacker to perform a manipulation that leads to the overflow.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-119

CWE-122

Related Identifiers

CVE-2026-9541

Affected Products

Squirrel

References · 13

• 🔥 https://github.com/albertodemichelis/squirrel/issues/327 · Exploit
• 🔥 https://github.com/biniamf/pocs/tree/main/squirrel-sqobject-readobject-neg-len-oob · Exploit
• 🔥 https://vuldb.com/submit/814826 · Exploit
• https://ubuntu.com/security/CVE-2026-9541 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-9541 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-9541 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-9541 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-9541 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-9541 · Vendor Advisory
• https://vuldb.com/vuln/365602 · Note
• https://t.me/cveNotify/164905 · Telegram Post
• https://vuldb.com/vuln/365602/cti · Note
• https://t.me/CVEtracker/54974 · Telegram Post