VDB-346457 · Submit #753163 · CVE-2026-2659

Squirrel up to 3.2 sqfuncstate.cpp SQFuncState::PopTarget _target_stack out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Squirrel up to 3.2. Affected by this issue is the function SQFuncState::PopTarget of the file src/squirrel/squirrel/sqfuncstate.cpp. The manipulation of the argument _target_stack leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-2659. Local access is required to approach this attack. Moreover, an exploit is present. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Squirrel up to 3.2. This issue affects the function SQFuncState::PopTarget of the file src/squirrel/squirrel/sqfuncstate.cpp. The manipulation of the argument _target_stack with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-2659. The exploitation is known to be easy. An attack has to be approached locally. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet. The vulnerability scanner Nessus provides a plugin with the ID 299488 (Linux Distros Unpatched Vulnerability : CVE-2026-2659), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (299488). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Squirrel

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 299488
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-2659

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/18/2026 Advisory disclosed
02/18/2026 +0 days VulDB entry created
02/21/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: 311
Status: Not defined

CVE: CVE-2026-2659 (🔒)
GCVE (CVE): GCVE-0-2026-2659
GCVE (VulDB): GCVE-100-346457
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/18/2026 08:25
Updated: 02/21/2026 19:31
Changes: 02/18/2026 08:25 (57), 02/20/2026 00:09 (2), 02/21/2026 19:31 (41)
Complete: 🔍
Submitter: Oneafter
Cache ID: 216::103

Submitinfo

Accepted

Submit #753163: albertodemichelis squirrel master-branch Heap-based Buffer Overflow (by Oneafter)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.