CVE-2024-13990: MicroWorld Technologies eScan AV

MicroWorld eScan AV Insecure Update Mechanism Allows Man-in-the-Middle Replacement of Updates

CVSS 9.3 CriticalCriticalEPSS 0.0062 · 50th percentile

Critical, because:

CVSS score 9.3: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 19 Sept 2025, 18:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
MicroWorld Technologies	eScan AV	affected * Other versions: unknown

Identifiers

CVE-2024-13990

CNA

VulnCheck

Weakness (CWE)

CWE-295 · CWE-347

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.3	Critical	4.0	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	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0062, the 50th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 19 Sept 2025. New records show when each source confirmed them.

Sources

References from the CNA

blog.avast.com/leading-the-charge-against-guptiminer technical-description
securityaffairs.com/162228/breaking-news/escan-antivirus-mitm-attack.html media-coverage
arstechnica.com/security/2024/04/hackers-infect-users-of-antivirus-service-that-delivered-updates-over-http/ technical-description
www.bleepingcomputer.com/news/security/hackers-hijack-antivirus-updates-to-drop-guptiminer-malware/ media-coverage
thehackernews.com/2024/04/escan-antivirus-update-mechanism.html media-coverage
www.escanav.com/en/about-us/eScan-update-advisory.asp vendor-advisorypatch
www.vulncheck.com/advisories/microworld-escan-av-insecure-update-mechanism-allows-mitm-replacement-of-updates third-party-advisory
www.gendigital.com/blog/insights/research/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-mining technical-descriptionexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.