CVE-2026-4174Public exploit

Local process crash via unbounded export allocation

Published Mar 15, 2026 · Updated Mar 15, 2026

Uncontrolled memory allocation in radare2 5.9.9 allows local users to crash a parsing process with a crafted Mach-O file. walk_exports_trie passes the unbounded export_size from LC_DYLD_INFO_ONLY to calloc without checking it against the input file size. Exploitation requires local execution of the parser; the report demonstrates a multi-gigabyte allocation and possible OOM kill, but the maintainer disputes that behavior as a denial of service.

CVSS severity3.3
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled memory allocation in radare2 5.9.9 allows local users to crash a parsing process with a crafted Mach-O file. walk_exports_trie passes the unbounded export_size from LC_DYLD_INFO_ONLY to calloc without checking it against the input file size. Exploitation requires local execution of the parser; the report demonstrates a multi-gigabyte allocation and possible OOM kill, but the maintainer disputes that behavior as a denial of service.

The record

CVE
CVE-2026-4174
Published
Mar 15, 2026
Updated
Mar 15, 2026
Vendor
radareorg
Product
radare2
Classifications
CWE-400, CWE-404, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 15, 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=5.9.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

radareorg · radare2version=5.9.9

Published CVSS scores

1.9NIST NVDCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-404Improper Resource Shutdown or Release
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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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