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CVE-2026-25856

📛 CVE Title

(no title)

⬇ Download JSON ⚠ View as Threat

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.

Overview

State
—
Assigner (CNA)
—
CVSS severity
high
CVSS score
CVSS 8.8 / 10 8.8 8.8 / 10
CVSS vector
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Effective score
8.8 / 10 HIGH source: CNA overview
CWE(s)
—
Reserved
—
Published
—
Last updated
—
Source
https://www.tenable.com/cve/CVE-2026-25856
Linked Threat
CVE-2026-25856 — CVE-2026-25856

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-06-08 17:16:41 UTC
NVD last modified
2026-07-23 07:10:00 UTC
NVD CVSS v3.1
CVSS 8.8 / 10 8.8 8.8 / 10 HIGH source: disclosure@vulncheck.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore
2.8 / 10
Impact subscore
5.9 / 10
EPSS score
0.0047 (probability of exploitation in next 30 days)
EPSS percentile
38.37% vs all CVEs — higher = more likely to be exploited, as of 2026-07-30

NVD-assigned CWE(s): CWE-94 (differs from the CNA list above)

NVD / KEV / EPSS data refreshed 2026-07-31 09:36 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-35135
Assigner
VulnCheck
Published
Jun 8, 2026, 4:50:42 PM
Updated
Jul 14, 2026, 3:53:51 PM
EUVD base score (CVSS 4.0)
8.7 / 10
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
EUVD-reported EPSS
0.4700
Vendors
openbullet
Products
openbullet2 (0 ≤0.3.2)
Aliases
GHSA-w8vj-qcv3-4w36

ENISA 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.

EUVD references (2)

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (4)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-25856.json.

Not stored.