Medium severity · published Sep 22, 2026
CVE-2026-81886
radare2: Uncontrolled memory allocation in radare2 dmp64 parser
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was vulnerable because the Windows dmp64 parser used an input-controlled physical-memory-run PageCount directly as the bound of a per-page allocation loop. The vulnerability is triggered by opening a small crafted full-memory Windows crash dump. The parser repeatedly allocated and appended page descriptors without validating the count against the dump size. This can cause denial of service through excessive memory consumption and processing time. This issue is fixed in version 6.2.0.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
radare2 · radareorg
< 6.2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81886
Patch
https://github.com/radareorg/radare2/commit/a7519fdb4da6835c2cecd8fe248e7dd1133cf17a
Exploit
https://github.com/radareorg/radare2/issues/26224
Patch
https://github.com/radareorg/radare2/pull/26180
Release Notes
https://github.com/radareorg/radare2/releases/tag/6.2.0
Patch
https://github.com/radareorg/radare2/security/advisories/GHSA-3xrx-wh64-8xr8
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