CVE-2026-25856

CVE Enrichment

CVSS: 8.7 HIGH
EPSS: 1.09%
EPSS Percentile: 65.53%
CISA KEV: Not listed

Description

OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: [email protected]
Published: 09-Jun-2026 00:16
Last Modified: 23-Jul-2026 14:10
EPSS Date: 2026-11-07
CWE: CWE-94

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:N /
                            PR:L /
                            UI:N /
                            VC:H /
                            VI:H /
                            VA:H /
                            SC:N /
                            SI:N /
                            SA:N /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

CNA Products / Version Status

openbullet · openbullet2 Source: CNA · [email protected]
Default status: affected

0 ≤ version ≤ 0.3.2 — affected (semver)

packageURL: pkg:github/openbullet/openbullet2
repo: https://github.com/openbullet/openbullet2

References

Last enrichment sync: 08-Nov-2026 05:37
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2026-25856: A Remote Code Execution (RCE) exploit that abuses the plain C# execution mode to run arbitrary .NET APIs and access the file system. Metasploit Framework 6.5.9 Adds RCE Modules for Network Devices, GitLab and More

CVE (6)

People (2)

Vendors (4)

Products (10)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.