What is the CVSS score of CVE-2025-69809?

CVE-2025-69809 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2025-69809?

Within 24 hours: Identify and inventory all systems running p2r3 Bareiron commit 8e4d40 or earlier, isolate affected systems from production networks if operationally feasible, and enable enhanced monitoring for suspicious network activity. Within 7 days: Implement network segmentation to restrict access to affected systems, apply WAF rules to block malformed packets targeting vulnerable endpoints, and establish incident response procedures. Within 30 days: Evaluate migration to patched versions or alternative solutions, conduct security assessments of potentially compromised systems, and implement additional compensating controls based on your network architecture.

N A CVE-2025-69809

Q: Which versions of N A are affected by CVE-2025-69809?

CVE-2025-69809 is a critical vulnerability affecting p2r3 Bareiron that allows unauthenticated attackers to execute arbitrary code on affected systems through specially crafted network packets.

EUVD-2025-208767 CRITICAL

Write-what-where Condition (CWE-123)

2026-03-16 mitre

RCE N A

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 27, 2026 - 18:52 vuln.today

cvss_changed

EUVD ID Assigned

Mar 16, 2026 - 20:05 euvd

EUVD-2025-208767

Analysis Generated

Mar 16, 2026 - 20:05 vuln.today

CVE Published

Mar 16, 2026 - 00:00 nvd

CRITICAL 9.8

DescriptionCVE.org

A write-what-where condition in p2r3 Bareiron commit 8e4d40 allows unauthenticated attackers to write arbitrary values to memory, enabling arbitrary code execution via a crafted packet.

AnalysisAI

A critical write-what-where memory corruption vulnerability exists in p2r3 Bareiron (commit 8e4d40) that allows unauthenticated remote attackers to write arbitrary values to memory locations, enabling arbitrary code execution through specially crafted network packets. The vulnerability carries a CVSS score of 9.8 and is remotely exploitable without authentication, though it is not currently listed in CISA KEV and has no EPSS score data available. A proof-of-concept appears to exist based on the GitHub reference to a dedicated CVE repository.

Technical ContextAI

p2r3 Bareiron is a software project hosted on GitHub, though specific details about its functionality are limited in the available data. The vulnerability is classified as a write-what-where condition, which is a severe memory corruption issue where an attacker can control both the value written and the destination memory address. While no specific CWE classification is provided, write-what-where vulnerabilities typically fall under CWE-123 (Write-what-where Condition) and are often the result of insufficient bounds checking or pointer validation in low-level code handling network packets.

RemediationAI

Update p2r3 Bareiron to a version after commit 8e4d40 that addresses this vulnerability, though specific fixed version information is not provided in the available data. Organizations should check the project's GitHub repository at https://github.com/p2r3/bareiron for patches or updates addressing CVE-2025-69809. Until a patch can be applied, implement network-level controls to restrict access to systems running Bareiron, particularly blocking untrusted network traffic that could deliver crafted packets to exploit this vulnerability.