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VulnerabilityPublished

CVE-2025-69809: p2r3 Bareiron · Write-what-where Condition

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

  1. Immediate network segmentation to isolate Bareiron-based devices from untrusted networks and limit exposure to crafted packets.
  2. Deploy intrusion detection and prevention systems (IDS/IPS) with signatures or anomaly detection tuned to identify suspicious packet patterns targeting Bareiron devices.
  3. Implement strict firewall rules to restrict inbound traffic to only trusted sources and necessary protocols for Bareiron devices.
  4. Monitor network traffic for unusual activity indicative of exploitation attempts, including unexpected memory write operations or device behavior anomalies.
  5. Engage with the device vendor or firmware maintainers to obtain patches or firmware updates as soon as they become available and prioritize their deployment.
  6. Conduct thorough asset inventories to identify all devices running Bareiron firmware and assess their exposure.
  7. Where possible, apply application-layer filtering or protocol validation to prevent malformed packets from reaching vulnerable devices.
  8. Consider deploying endpoint detection and response (EDR) solutions on devices or gateways to detect signs of compromise.
  9. Develop incident response plans specific to embedded device compromise scenarios to enable rapid containment and recovery.
  10. Educate network and security teams about this vulnerability and the importance of proactive monitoring and mitigation.

Description

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.

References

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