CVE-2022-28073Network attack vector

Process crash via stale register item reuse

Published Aug 22, 2023 · Updated Oct 3, 2024

Use-after-free in radare2 5.4.0 and 5.4.2 allows attackers to crash the process when the aaft analysis path updates registers. The type-matching loop retains an RRegItem pointer across ESIL stepping that can invalidate it, then passes the stale pointer to r_reg_set_value. Reaching the crash requires invoking aaft on content that exercises the affected type-matching path; no code-execution or data-disclosure impact is documented.

CVSS severity7.5
High
EPSS probability0.92%
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 5.4.0 and 5.4.2 allows attackers to crash the process when the aaft analysis path updates registers. The type-matching loop retains an RRegItem pointer across ESIL stepping that can invalidate it, then passes the stale pointer to r_reg_set_value. Reaching the crash requires invoking aaft on content that exercises the affected type-matching path; no code-execution or data-disclosure impact is documented.

The record

CVE
CVE-2022-28073
Published
Aug 22, 2023
Updated
Oct 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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