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Vulnerability Details :

CVE-2024-13990

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-19 Sep, 2025 | 18:54
Updated At-19 Nov, 2025 | 15:58
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:19 Sep, 2025 | 18:54
Updated At:19 Nov, 2025 | 15:58
Rejected At:
▼CVE Numbering Authority (CNA)
MicroWorld eScan AV Insecure Update Mechanism Allows Man-in-the-Middle Replacement of Updates

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.

Affected Products
Vendor
MicroWorld Technologies
Product
eScan AV
Modules
  • software update mechanism (update client and update delivery/protocol)
Platforms
  • Windows
Default Status
unknown
Versions
Affected
  • *
Problem Types
TypeCWE IDDescription
CWECWE-295CWE-295 Improper Certificate Validation
CWECWE-347CWE-347 Improper Verification of Cryptographic Signature
Type: CWE
CWE ID: CWE-295
Description: CWE-295 Improper Certificate Validation
Type: CWE
CWE ID: CWE-347
Description: CWE-347 Improper Verification of Cryptographic Signature
Metrics
VersionBase scoreBase severityVector
4.09.3CRITICAL
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
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Milánek and Jan Rubín
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://blog.avast.com/leading-the-charge-against-guptiminer
technical-description
https://www.gendigital.com/blog/insights/research/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-mining
technical-description
exploit
https://securityaffairs.com/162228/breaking-news/escan-antivirus-mitm-attack.html
media-coverage
https://arstechnica.com/security/2024/04/hackers-infect-users-of-antivirus-service-that-delivered-updates-over-http/
technical-description
https://www.bleepingcomputer.com/news/security/hackers-hijack-antivirus-updates-to-drop-guptiminer-malware/
media-coverage
https://thehackernews.com/2024/04/escan-antivirus-update-mechanism.html
media-coverage
https://www.escanav.com/en/about-us/eScan-update-advisory.asp
vendor-advisory
patch
https://www.vulncheck.com/advisories/microworld-escan-av-insecure-update-mechanism-allows-mitm-replacement-of-updates
third-party-advisory
Hyperlink: https://blog.avast.com/leading-the-charge-against-guptiminer
Resource:
technical-description
Hyperlink: https://www.gendigital.com/blog/insights/research/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-mining
Resource:
technical-description
exploit
Hyperlink: https://securityaffairs.com/162228/breaking-news/escan-antivirus-mitm-attack.html
Resource:
media-coverage
Hyperlink: https://arstechnica.com/security/2024/04/hackers-infect-users-of-antivirus-service-that-delivered-updates-over-http/
Resource:
technical-description
Hyperlink: https://www.bleepingcomputer.com/news/security/hackers-hijack-antivirus-updates-to-drop-guptiminer-malware/
Resource:
media-coverage
Hyperlink: https://thehackernews.com/2024/04/escan-antivirus-update-mechanism.html
Resource:
media-coverage
Hyperlink: https://www.escanav.com/en/about-us/eScan-update-advisory.asp
Resource:
vendor-advisory
patch
Hyperlink: https://www.vulncheck.com/advisories/microworld-escan-av-insecure-update-mechanism-allows-mitm-replacement-of-updates
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:19 Sep, 2025 | 19:15
Updated At:22 Sep, 2025 | 21:23

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.09.3CRITICAL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-295Secondarydisclosure@vulncheck.com
CWE-347Secondarydisclosure@vulncheck.com
CWE ID: CWE-295
Type: Secondary
Source: disclosure@vulncheck.com
CWE ID: CWE-347
Type: Secondary
Source: disclosure@vulncheck.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://arstechnica.com/security/2024/04/hackers-infect-users-of-antivirus-service-that-delivered-updates-over-http/disclosure@vulncheck.com
N/A
https://blog.avast.com/leading-the-charge-against-guptiminerdisclosure@vulncheck.com
N/A
https://securityaffairs.com/162228/breaking-news/escan-antivirus-mitm-attack.htmldisclosure@vulncheck.com
N/A
https://thehackernews.com/2024/04/escan-antivirus-update-mechanism.htmldisclosure@vulncheck.com
N/A
https://www.bleepingcomputer.com/news/security/hackers-hijack-antivirus-updates-to-drop-guptiminer-malware/disclosure@vulncheck.com
N/A
https://www.escanav.com/en/about-us/eScan-update-advisory.aspdisclosure@vulncheck.com
N/A
https://www.gendigital.com/blog/insights/research/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-miningdisclosure@vulncheck.com
N/A
https://www.vulncheck.com/advisories/microworld-escan-av-insecure-update-mechanism-allows-mitm-replacement-of-updatesdisclosure@vulncheck.com
N/A
Hyperlink: https://arstechnica.com/security/2024/04/hackers-infect-users-of-antivirus-service-that-delivered-updates-over-http/
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://blog.avast.com/leading-the-charge-against-guptiminer
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://securityaffairs.com/162228/breaking-news/escan-antivirus-mitm-attack.html
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://thehackernews.com/2024/04/escan-antivirus-update-mechanism.html
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.bleepingcomputer.com/news/security/hackers-hijack-antivirus-updates-to-drop-guptiminer-malware/
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.escanav.com/en/about-us/eScan-update-advisory.asp
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.gendigital.com/blog/insights/research/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-mining
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.vulncheck.com/advisories/microworld-escan-av-insecure-update-mechanism-allows-mitm-replacement-of-updates
Source: disclosure@vulncheck.com
Resource: N/A

Change History

0
Information is not available yet

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Vendor-botan_projectrandombitRed Hat, Inc.
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CWE ID-CWE-295
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Matching Score-4
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Vendor-fleetdmfleetdm
Product-fleetfleet
CWE ID-CWE-347
Improper Verification of Cryptographic Signature
CVE-2023-53951
Matching Score-4
Assigner-VulnCheck
ShareView Details
Matching Score-4
Assigner-VulnCheck
CVSS Score-9.3||CRITICAL
EPSS-0.33% / 25.04%
||
7 Day CHG~0.00%
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Ever Gauzy v0.281.9 JWT Authentication Weakness via HMAC Secret

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Action-Not Available
Vendor-Gauzy
Product-ever gauzy
CWE ID-CWE-347
Improper Verification of Cryptographic Signature
CVE-2024-47832
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-9.3||CRITICAL
EPSS-0.40% / 32.60%
||
7 Day CHG~0.00%
Published-09 Oct, 2024 | 18:32
Updated-11 Oct, 2024 | 16:58
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
XML Signature Bypass via differential XML parsing in ssoready

ssoready is a single sign on provider implemented via docker. Affected versions are vulnerable to XML signature bypass attacks. An attacker can carry out signature bypass if you have access to certain IDP-signed messages. The underlying mechanism exploits differential behavior between XML parsers. Users of https://ssoready.com, the public hosted instance of SSOReady, are unaffected. We advise folks who self-host SSOReady to upgrade to 7f92a06 or later. Do so by updating your SSOReady Docker images from sha-... to sha-7f92a06. There are no known workarounds for this vulnerability.

Action-Not Available
Vendor-ssoreadyssoready
Product-ssoreadyssoready
CWE ID-CWE-347
Improper Verification of Cryptographic Signature
Details not found