CVE-2020-4435Network attack vector

Remote code execution via HTTP fallback memory corruption

Published Jun 10, 2020 · Updated Sep 16, 2024

Memory corruption in IBM Aspera applications allows remote authenticated users to execute code or crash the service through HTTP fallback. IBM has not disclosed the affected function or the incorrect memory operation that processes HTTP fallback traffic. Exploitation requires a configuration exposing HTTP fallback and intimate system knowledge; successful attacks can execute arbitrary code or interrupt the service.

CVSS severity7.5
High
EPSS probability1.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in IBM Aspera applications allows remote authenticated users to execute code or crash the service through HTTP fallback. IBM has not disclosed the affected function or the incorrect memory operation that processes HTTP fallback traffic. Exploitation requires a configuration exposing HTTP fallback and intimate system knowledge; successful attacks can execute arbitrary code or interrupt the service.

The record

CVE
CVE-2020-4435
Published
Jun 10, 2020
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Aspera High-Speed Transfer Server for Cloud Pak for Integration
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=3.9.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Aspera High-Speed Transfer Server for Cloud Pak for Integrationversion=3.9.10
IBM · IBM Aspera Server on Demandversion=3.7.4
IBM · Aspera High-Speed Transfer Endpointversion=3.9.3
IBM · IBM Aspera Proxy Serverversion=1.4.3
IBM · Aspera High-Speed Transfer Serverversion=3.9.3
IBM · IBM Aspera Streamingversion=3.9.3
IBM · IBM Aspera Faspex on Demandversion=3.7.4
IBM · IBM Aspera Application Platform on Demandversion=3.7.4
IBM · IBM Aspera Shares on Demandversion=3.7.4
IBM · IBM Aspera Transfer Cluster Managerversion=1.3.1

Published CVSS scores

6.5IBMCVSS:3.0/I:H/AC:H/UI:N/A:H/AV:N/C:H/S:U/PR:L/RL:O/E:U/RC:C
7.5IBMCVSS:3.0/AV:N/AC:H/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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