CVE-2025-5877Public exploitNetwork attack vector

Authenticated file disclosure via external entity expansion

Published Jun 9, 2025 · Updated Jun 9, 2025

XML external entity injection in Feng Office 3.2.2.1 allows remote authenticated users to read server files through document upload. The readZippedXML function parses XML from uploaded DOCX or ODT files with entity expansion and XInclude enabled, resolving attacker-controlled external entities. An account permitted to upload documents can exfiltrate local files and induce outbound server requests; code execution requires additional PHP facilities.

CVSS severity6.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in Feng Office 3.2.2.1 allows remote authenticated users to read server files through document upload. The readZippedXML function parses XML from uploaded DOCX or ODT files with entity expansion and XInclude enabled, resolving attacker-controlled external entities. An account permitted to upload documents can exfiltrate local files and induce outbound server requests; code execution requires additional PHP facilities.

The record

CVE
CVE-2025-5877
Published
Jun 9, 2025
Updated
Jun 9, 2025
Vendor
Feng Office
Product
Feng Office
Classifications
CWE-611, CWE-610, CAPEC-201, CAPEC-664, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.2.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Feng Office · Feng Officeversion=3.2.2.1

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
2.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
CWE-610Externally Controlled Reference to a Resource in Another Sphere
CAPEC-201Serialized Data External Linking
CAPEC-664Server Side Request Forgery
T1005Data from Local System

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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