CVE-2024-11612Network attack vector

Process hang via CopyCoder infinite loop

Published Nov 22, 2024 · Updated Nov 26, 2024

Denial of service in 7-Zip 24.06 allows remote attackers to hang a consuming process by supplying a crafted stream. The Qcow handler's CopyCoder stream-processing logic fails to reach its loop exit condition, leaving the process in an infinite loop. Exploitation requires user interaction with the affected library through a host application, and the resulting impact is limited to an availability loss in that process.

CVSS severity6.5
Medium
EPSS probability1.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in 7-Zip 24.06 allows remote attackers to hang a consuming process by supplying a crafted stream. The Qcow handler's CopyCoder stream-processing logic fails to reach its loop exit condition, leaving the process in an infinite loop. Exploitation requires user interaction with the affected library through a host application, and the resulting impact is limited to an availability loss in that process.

The record

CVE
CVE-2024-11612
Published
Nov 22, 2024
Updated
Nov 26, 2024
Vendor
7-Zip
Product
7-Zip
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 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=24.06

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

7-Zip · 7-Zipversion=24.06

Published CVSS scores

6.5Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:R/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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