Is CVE-2026-81886 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-81886 being exploited in the wild.

How severe is CVE-2026-81886?

Medium severity, with a CVSS score of 5.5, published 22 September 2026.

Which products and versions are affected?

Radareorg Radare2 before 6.2.0.

Is there a fix for CVE-2026-81886?

A patch was published on 2026-07-06: commit a7519fdb4da6835c2cecd8fe248e7dd1133cf17a Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-81886 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-81886?

Check whether you run Radareorg Radare2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-81886: radare2 unbounded allocation in dmp64 parser

CVE-2026-81886 · Severity: medium · CVSS 5.5 · Published 2026-09-22

radare2 is a reverse engineering framework used to analyze binary files and crash dumps. A flaw in its Windows 64-bit crash dump parser allows an attacker to craft a malicious dump file that triggers uncontrolled memory allocation when opened, causing the tool to hang or crash—denying analysts access to the system for forensic investigation.

Technologies: Radareorg Radare2. Vendors: Radareorg.

Quick answers

Is CVE-2026-81886 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-81886 being exploited in the wild.
How severe is CVE-2026-81886?: Medium severity, with a CVSS score of 5.5, published 22 September 2026.
Which products and versions are affected?: Radareorg Radare2 before 6.2.0.
Is there a fix for CVE-2026-81886?: A patch was published on 2026-07-06: commit a7519fdb4da6835c2cecd8fe248e7dd1133cf17a Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-81886 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-81886?: Check whether you run Radareorg Radare2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The dmp64 parser in radare2 prior to 6.2.0 reads a page count directly from an untrusted crash dump file and uses it as a loop bound for heap allocation without validating it against the dump file size. An attacker can craft a DMP file with the magic "PAGEDU64", DumpType=1, and a PageCount field set to 0xFFFFFFFFFFFFFFFF to trigger unbounded allocation. The vulnerability is reached on file open and requires no user interaction beyond opening the malicious file.

Affected products

radareorg radare2 before 6.2.0

Timeline

2026-07-12: disclosed
2026-07-06: patched: commit a7519fdb4da6835c2cecd8fe248e7dd1133cf17a
2026-09-22: advisory

References

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