MicroWorld eScan AV's update mechanism failed to ensure authenticity and integrity of updates: update packages were delivered and accepted without robust cryptographic verification. As a result, an on-path attacker could perform a man-in-the-middle (MitM) attack and substitute malicious update payloads for legitimate ones. The eScan AV client accepted these substituted packages and executed or loaded their components (including sideloaded DLLs and Java/installer payloads), enabling remote code execution on affected systems. MicroWorld eScan confirmed remediation of the update mechanism on 2023-07-31 but versioning details are unavailable. NOTE: MicroWorld eScan disputes the characterization in third-party reports, stating the issue relates to 2018–2019 and that controls were implemented then.
History

Mon, 22 Sep 2025 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microworld Technologies
Microworld Technologies escan
Vendors & Products Microworld Technologies
Microworld Technologies escan

Fri, 19 Sep 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 19 Sep 2025 19:00:00 +0000

Type Values Removed Values Added
Description MicroWorld eScan AV's update mechanism failed to ensure authenticity and integrity of updates: update packages were delivered and accepted without robust cryptographic verification. As a result, an on-path attacker could perform a man-in-the-middle (MitM) attack and substitute malicious update payloads for legitimate ones. The eScan AV client accepted these substituted packages and executed or loaded their components (including sideloaded DLLs and Java/installer payloads), enabling remote code execution on affected systems. MicroWorld eScan confirmed remediation of the update mechanism on 2023-07-31 but versioning details are unavailable. NOTE: MicroWorld eScan disputes the characterization in third-party reports, stating the issue relates to 2018–2019 and that controls were implemented then.
Title MicroWorld eScan AV Insecure Update Mechanism Allows Man-in-the-Middle Replacement of Updates
Weaknesses CWE-295
CWE-347
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-09-19T20:14:07.736Z

Reserved: 2025-09-18T16:06:40.562Z

Link: CVE-2024-13990

cve-icon Vulnrichment

Updated: 2025-09-19T20:14:01.522Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-19T19:15:38.170

Modified: 2025-09-22T21:23:01.543

Link: CVE-2024-13990

cve-icon Redhat

No data.