CVE-2026-39457

Published: Apr 30, 2026 Last Modified: Mag 01, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,8
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

When exchanging data over a socket, libnv uses select(2) to wait for data to arrive. However, it does not verify whether the provided socket descriptor fits in select(2)'s file descriptor set size limit of FD_SETSIZE (1024).

An attacker who is able to force a libnv application to allocate large file descriptors, e.g., by opening many descriptors and executing a program which is not careful to close them upon startup, can trigger stack corruption. If the target application is setuid-root, then this could be used to elevate local privileges.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

121

Stack-based Buffer Overflow

Draft
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Integrity Confidentiality Access Control Other
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Execute Unauthorized Code Or Commands Bypass Protection Mechanism Other
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p4:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.4
cpe:2.3:o:freebsd:freebsd:14.4:rc1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p6:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.4
cpe:2.3:o:freebsd:freebsd:14.4:p2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:beta3:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p10:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p9:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p7:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p10:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.4
cpe:2.3:o:freebsd:freebsd:14.4:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p8:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p5:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p3:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p11:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p11:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.4
cpe:2.3:o:freebsd:freebsd:14.4:p1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p8:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 15.0
cpe:2.3:o:freebsd:freebsd:15.0:p2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 13.5
cpe:2.3:o:freebsd:freebsd:13.5:p12:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Freebsd by Freebsd

Product Information
Vendor Freebsd
Product Freebsd
Version 14.3
cpe:2.3:o:freebsd:freebsd:14.3:p9:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://security.freebsd.org/advisories/FreeBSD-SA-26:16.li…
https://security.freebsd.org/advisories/FreeBSD-SA-26:16.libnv.asc