CVE-2026-81886Hinoki check available

Process denial of service via unchecked PageCount

Published Sep 22, 2026 · Updated Sep 22, 2026

Resource exhaustion in radare2 before 6.2.0 allows context-dependent attackers to interrupt the process via a crafted Windows crash dump. The dmp64 parser uses an input-controlled physical-memory-run PageCount as a per-page allocation-loop bound without checking it against the dump size. Exploitation requires the dump to be opened, after which repeated descriptor allocations consume excessive memory and processing time without a reported confidentiality or integrity impact.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in radare2 before 6.2.0 allows context-dependent attackers to interrupt the process via a crafted Windows crash dump. The dmp64 parser uses an input-controlled physical-memory-run PageCount as a per-page allocation-loop bound without checking it against the dump size. Exploitation requires the dump to be opened, after which repeated descriptor allocations consume excessive memory and processing time without a reported confidentiality or integrity impact.

The record

CVE
CVE-2026-81886
Published
Sep 22, 2026
Updated
Sep 22, 2026
Vendor
radareorg
Product
radare2
Classifications
T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

radareorg · radare2version=< 6.2.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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