MediumCVE-2026-117350

    Bitcoin Core 29.5, 30.4, 31.2 and 32.1 fix three AI-found bugs, including a remote crash of Windows, macOS and BSD nodes

    Published Last modified Sources: pwn.watch

    What is affected, what to do

    Bitcoin Core prior to 29.5, 30.4, 31.2 and 32.1 is vulnerable to an OOM issue.

    Update Bitcoin Core to version 29.5.

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

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    Priority

    No value is available for this vulnerability.

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    CVSS v3

    No value is available for this vulnerability.

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    EPSS score

    No value is available for this vulnerability.

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    Severity
    Medium
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    30.00 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

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    no public PoC known
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
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    Published

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    Bitcoin Core prior to 29.5, 30.4, 31.2 and 32.1 is vulnerable to an OOM issue.

    Source: pwn.watch

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    —Bitcoin Core
    • < 29.5
    • 29.5

    References & sources

    • bitcoin.com
    • bitcoincore.orgUnbounded memory growth through TCP urgent data on non-Linux systemspwn-watch
    • pwn.watchpwn.watch: Bitcoin Core 29.5, 30.4, 31.2 and 32.1 fix three AI-found bugs, including a remote crash of Windows, macOS and BSD nodespwn-watch
    • CVE.org (MITRE)CVE-2026-117350 (TCP urgent-data OOM)pwn-watch
    • bitcoincore.orgSlow unbounded memory growth on paused pre-BIP31 peerspwn-watch
    • bitcoincore.orgUndo file overflow under extreme conditionspwn-watch
    • bitcoincore.orgBitcoin Core 32.1 release notespwn-watch
    • coindesk.comAI found a way to crash bitcoin nodes on Windows and Macs. It's now publicpwn-watch

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. ReceivedMITRE

      Description added or changed

      Show 4 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
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      Bitcoin Core prior to 29.5, 30.4, 31.2 and 32.1 is vulnerable to an OOM issue.
      Affected versions (publisher)added
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      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/117xxx/CVE-2026-117350.json">CVE-2026-117350</a>
      Referenceadded
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      http://bitcoin.com
      Referenceadded
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      https://bitcoincore.org/en/2026/10/28/disclose-tcp-oom/

      Source identifier: cve@mitre.org

    Linked CVEs

    Linked CVEs
    Not ratedCVE-2026-117350Vulnerability CVE-2026-117350——
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