CVE-2021-24284 (GCVE-0-2021-24284)

Vulnerability from cvelistv5 – Published: 2021-05-14 11:38 – Updated: 2024-08-03 19:28
VLAI Shadowserver KEVIntel
Title
Kaswara Modern VC Addons <= 3.0.1 - Unauthenticated Arbitrary File Upload
Summary
The Kaswara Modern VC Addons WordPress plugin through 3.0.1 allows unauthenticated arbitrary file upload via the 'uploadFontIcon' AJAX action. The supplied zipfile being unzipped in the wp-content/uploads/kaswara/fonts_icon directory with no checks for malicious files such as PHP.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
SayenThemes Kaswara Modern VC Addons Affected: 3.0.1 , ≤ 3.0.1 (custom)
Create a notification for this product.
Credits
Robin Goodfellow
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2ec8f2e8-3d91-486e-b8b6-e6dec1cda48f

Vulnerability ID: CVE-2021-24284

Status: Confirmed

Status Updated: 2025-02-13 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2025-02-13
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Wordpress / Wordpress Kaswara Modern VC Addons plugin | Class: cms | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2025-02-13: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class cms
7D Avg 0
Vendor Wordpress
30D Avg 0
90D Avg 1
Product Wordpress Kaswara Modern VC Addons plugin
Cisa Kev no
Connections 2
Observation Date 2025-02-13
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 05:54 UTC | Updated: 2026-07-01 13:14 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 23dd7c83-e3bd-40f1-b2f7-17b0ef9bf81d

Vulnerability ID: CVE-2021-24284

Status: Confirmed

Status Updated: 2022-07-13 10:52 UTC

Exploited: Yes

Timestamps
First Seen: 2022-07-13
Asserted: 2022-07-13
Scope
Notes: KEVIntel entry: Kaswara Modern VC Addons <= 3.0.1 - Unauthenticated Arbitrary File Upload | Affected: SayenThemes / Kaswara Modern VC Addons | CVSS: 9.8 (CRITICAL) | EPSS: 0.91328 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Kaswara Modern VC Addons <= 3.0.1 - Unauthenticated Arbitrary File Upload
Vendor SayenThemes
Product Kaswara Modern VC Addons
Added Date 2022-07-13T10:52:06.000Z
Cvss Score 9.8
Epss Score 0.91328
Cvss Severity CRITICAL
Epss Percentile 0.99622
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 11:12 UTC | Updated: 2026-06-23 11:12 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.