CVE-2022-29695Public exploitNetwork attack vector

Service interruption via incomplete initialization cleanup

Published May 27, 2022 · Updated Aug 3, 2024

Memory leak in Unicorn Engine 2.0.0-rc7 allows context-dependent attackers to exhaust process memory through invalid CPU configuration. The uc_ctl API accepts an unsupported CPU model or mode, then uc_close frees only the engine object when initialization remains incomplete, leaving internal allocations such as l1_map unreleased. Reachability requires an embedding application to let attacker-controlled CPU settings reach the API repeatedly; the documented result is progressive memory consumption and eventual service interruption.

CVSS severity7.5
High
EPSS probability1.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Unicorn Engine 2.0.0-rc7 allows context-dependent attackers to exhaust process memory through invalid CPU configuration. The uc_ctl API accepts an unsupported CPU model or mode, then uc_close frees only the engine object when initialization remains incomplete, leaving internal allocations such as l1_map unreleased. Reachability requires an embedding application to let attacker-controlled CPU settings reach the API repeatedly; the documented result is progressive memory consumption and eventual service interruption.

The record

CVE
CVE-2022-29695
Published
May 27, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-665, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 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

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-665Improper Initialization
T1499.004Application 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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