CVE-2024-55969Network attack vector

Document resaving interruption via external reference XML

Published Dec 15, 2024 · Updated Dec 16, 2024

Improper DOCX processing in Syncfusion Essential Studio for ASP.NET MVC before 27.1.55 allows remote attackers to interrupt document resaving. DocIO throws an XMLException when it resaves a crafted DOCX document containing external reference XML. A consuming application must pass attacker-controlled content into the resave path; public sources establish a failed resave operation, not a process crash or broader document compromise.

CVSS severity9.1
Critical
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper DOCX processing in Syncfusion Essential Studio for ASP.NET MVC before 27.1.55 allows remote attackers to interrupt document resaving. DocIO throws an XMLException when it resaves a crafted DOCX document containing external reference XML. A consuming application must pass attacker-controlled content into the resave path; public sources establish a failed resave operation, not a process crash or broader document compromise.

The record

CVE
CVE-2024-55969
Published
Dec 15, 2024
Updated
Dec 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 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

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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