CVE-2021-25084Public exploitNetwork attack vector

Subscriber-level cron manipulation via unchecked AJAX actions

Published Feb 7, 2022 · Updated Aug 3, 2024

Missing authorization in Advanced Cron Manager before 2.4.2 and Pro before 2.5.3 allows remote authenticated users to alter WP-Cron jobs. The acm/rerender/events and acm/event/add/form AJAX actions expose nonces to subscribers, and acm/event/insert accepts them without a capability check. Subscriber-level access is sufficient to add or remove events and schedules, changing which WordPress background tasks run and when.

CVSS severity4.3
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Advanced Cron Manager before 2.4.2 and Pro before 2.5.3 allows remote authenticated users to alter WP-Cron jobs. The acm/rerender/events and acm/event/add/form AJAX actions expose nonces to subscribers, and acm/event/insert accepts them without a capability check. Subscriber-level access is sufficient to add or remove events and schedules, changing which WordPress background tasks run and when.

The record

CVE
CVE-2021-25084
Published
Feb 7, 2022
Updated
Aug 3, 2024
Vendor
BracketSpace
Product
Advanced Cron Manager
Classifications
CWE-862, T1053.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

  1. Affected versionversion=2.4.2 <2.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BracketSpace · Advanced Cron Managerversion=2.4.2 <2.4.2
BracketSpace · Advanced Cron Manager Proversion=2.5.3 <2.5.3

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

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-862Missing Authorization
T1053.003Scheduled Task/Job: Cron

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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