CVE-2022-3525Network attack vector

Code injection via memcached response deserialization

Published Nov 20, 2022 · Updated Apr 24, 2025

Deserialization in LibreNMS before 22.10.0 allows remote attackers to execute code through crafted memcached application data. The memcached poller and Unix-agent paths pass device-supplied serialized PHP values to unserialize(), allowing object payloads to invoke application code. Exploitation requires influence over a monitored host's memcached response or Unix-agent output, and successful payloads run in the poller's context.

CVSS severity9.0
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in LibreNMS before 22.10.0 allows remote attackers to execute code through crafted memcached application data. The memcached poller and Unix-agent paths pass device-supplied serialized PHP values to unserialize(), allowing object payloads to invoke application code. Exploitation requires influence over a monitored host's memcached response or Unix-agent output, and successful payloads run in the poller's context.

The record

CVE
CVE-2022-3525
Published
Nov 20, 2022
Updated
Apr 24, 2025
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=unspecified <22.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LibreNMS · LibreNMSversion=unspecified <22.10.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0huntr.devCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/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 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-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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