CVE-2022-0849Public exploit

Application crash via stale register-name pointers

Published Mar 5, 2022 · Updated Aug 2, 2024

Use-after-free in radare2 before 5.6.6 allows context-dependent attackers to crash the application via crafted ARM or Thumb code. During ESIL analysis in r_core_anal_esil, register-name pointers returned by r_reg_get_name are retained across an analysis-register-profile reset, leaving them dangling; the fix duplicates the SP and PC names before later use. Opening and analyzing attacker-supplied ARM or Thumb input is required, and the grounded consequence is an application crash.

CVSS severity5.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in radare2 before 5.6.6 allows context-dependent attackers to crash the application via crafted ARM or Thumb code. During ESIL analysis in r_core_anal_esil, register-name pointers returned by r_reg_get_name are retained across an analysis-register-profile reset, leaving them dangling; the fix duplicates the SP and PC names before later use. Opening and analyzing attacker-supplied ARM or Thumb input is required, and the grounded consequence is an application crash.

The record

CVE
CVE-2022-0849
Published
Mar 5, 2022
Updated
Aug 2, 2024
Vendor
radareorg
Product
radare2
Classifications
CWE-416, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 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 <5.6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

radareorg · radare2version=unspecified <5.6.6

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.3huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H

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-416Use After Free
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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