Out-of-memory issue in Bitcoin Core enables denial of service
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-770.
Summary
Bitcoin Core versions prior to 29.5, 30.4, 31.2 and 32.1 are affected. The software allocates resources without limits or throttling (CWE-770), so memory use can grow until the process runs out of memory. A remote attacker with low privileges can exhaust memory without user interaction, causing a denial of service.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
Bitcoin Core prior to 29.5, 30.4, 31.2 and 32.1 is vulnerable to an OOM issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Bitcoin Core.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Timeline
- 2026-10-30 Threatist record created from CVE-2026-117350
- 2026-10-30 Alias added: GHSA-hmp5-qx3x-m58f
- 2026-11-06 CVSS score added · CISA ADP
- 2026-11-06 Weakness changed · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
Sources
- CVE-2026-117350 · CVE Program
- CVE-2026-117350 · NVD
- FIRST EPSS
- GHSA-hmp5-qx3x-m58f · GitHub Advisory Database · CC BY 4.0
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