CVE-2021-24155Public exploitNetwork attack vector

Administrator code execution via unchecked backup import

Published Apr 5, 2021 · Updated Aug 3, 2024

Arbitrary file upload in JetBackup for WordPress before 1.6.0 allows remote authenticated users to execute PHP code. The backup import action accepts files without verifying the SGBP format or extension and stores attacker-supplied PHP in the uploads area. Administrator privileges and a web server configuration that exposes uploaded PHP are required for code execution.

CVSS severity7.2
High
EPSS probability84.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in JetBackup for WordPress before 1.6.0 allows remote authenticated users to execute PHP code. The backup import action accepts files without verifying the SGBP format or extension and stores attacker-supplied PHP in the uploads area. Administrator privileges and a web server configuration that exposes uploaded PHP are required for code execution.

The record

CVE
CVE-2021-24155
Published
Apr 5, 2021
Updated
Aug 3, 2024
Vendor
JetApps
Product
JetBackup for WordPress
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 5, 2021CVE 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=1.6.0 <1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

JetApps · JetBackup for WordPressversion=1.6.0 <1.6.0

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

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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