CVE-2025-47784Network attack vector

Administrator dashboard interruption via crafted nickname

Published May 15, 2025 · Updated May 16, 2025

Deserialization failure in emlog 2.5.13 and earlier allows remote attackers to interrupt the administrator dashboard via a crafted nickname. Cache::readCache globally removes the PHP guard string before unserializing cache data, so that string inside name_orig corrupts the serialized value and returns false. Account registration with control of the nickname is required, and the reported consequence is an exception on the administrator home page when it counts the false user cache.

CVSS severity9.8
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization failure in emlog 2.5.13 and earlier allows remote attackers to interrupt the administrator dashboard via a crafted nickname. Cache::readCache globally removes the PHP guard string before unserializing cache data, so that string inside name_orig corrupts the serialized value and returns false. Account registration with control of the nickname is required, and the reported consequence is an exception on the administrator home page when it counts the false user cache.

The record

CVE
CVE-2025-47784
Published
May 15, 2025
Updated
May 16, 2025
Vendor
emlog
Product
emlog
Classifications
CWE-502, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 16, 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=<= 2.5.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

emlog · emlogversion=<= 2.5.13

Published CVSS scores

6.6GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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