CVE-2022-0518Public exploit

Process crash via malformed Java class attribute

Published Feb 8, 2022 · Updated Aug 2, 2024

Heap-based buffer overflow in radare2 before 5.6.2 allows attackers to crash the process by supplying a crafted Java class file. The r_bin_java_inner_classes_attr_new function in shlr/java/class.c checks an entry offset without adding buf_offset, permitting a read beyond the heap buffer. Exploitation requires a user to open or analyze the malicious file and can interrupt the process or expose adjacent heap contents.

CVSS severity6.3
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in radare2 before 5.6.2 allows attackers to crash the process by supplying a crafted Java class file. The r_bin_java_inner_classes_attr_new function in shlr/java/class.c checks an entry offset without adding buf_offset, permitting a read beyond the heap buffer. Exploitation requires a user to open or analyze the malicious file and can interrupt the process or expose adjacent heap contents.

The record

CVE
CVE-2022-0518
Published
Feb 8, 2022
Updated
Aug 2, 2024
Vendor
radareorg
Product
radare2
Classifications
CWE-122, CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=unspecified <5.6.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

radareorg · radare2version=unspecified <5.6.2

Published CVSS scores

6.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
5.8NIST NVDAV:N/AC:M/Au:N/C:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
T1204.002Malicious File

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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