CVE-2024-22368Public exploit

Process crash via unbounded merged-cell expansion

Published Jan 9, 2024 · Updated Nov 4, 2025

Resource exhaustion in Spreadsheet::ParseXLSX before 0.28 allows attackers to crash a parsing process with a crafted XLSX file. The _parse_sheet routine expands attacker-controlled merged-cell coordinates into a hash entry for every referenced cell without bounding the range. Exploitation requires an application to parse the malicious file and can exhaust host memory, interrupting the application or server.

CVSS severity5.5
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Spreadsheet::ParseXLSX before 0.28 allows attackers to crash a parsing process with a crafted XLSX file. The _parse_sheet routine expands attacker-controlled merged-cell coordinates into a hash entry for every referenced cell without bounding the range. Exploitation requires an application to parse the malicious file and can exhaust host memory, interrupting the application or server.

The record

CVE
CVE-2024-22368
Published
Jan 9, 2024
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application 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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