NVD / CVE Program· CNA ibm

CVE-2020-4433: Certain IBM Aspera applications are vulnerable to a stack-based buffer overflow, caused by improper bounds checking.

Noroxi assessment

Priority: Monitor (action score 32/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 5.2% (FIRST EPSS); higher than 92.5% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Certain IBM Aspera applications are vulnerable to a stack-based buffer overflow, caused by improper bounds checking. This could allow a remote attacker with intimate knowledge of the server to execute arbitrary code on the system with the privileges of root or cause server to crash. IBM X-Force ID: 180814.

HighCVSS 7.5 · v3.1—No exploit No fix recorded

Published: Jun 10, 2020
Updated: Jun 16, 2026
EPSS: 5.2% · 92th percentile
CWE: CWE-20

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 2 / 30 · 5.2%

CNA vs NVD score

NVD: 7.5
CNA · ibm: 7.5; agree

CVSS:3.0/AC:H/I:H/UI:N/PR:L/S:U/C:H/AV:N/A:H/RC:C/RL:O/E:U

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
ibm	aspera application platform on demand	cpe:2.3:a:ibm:aspera_application_platform_on_demand
ibm	aspera faspex on demand	cpe:2.3:a:ibm:aspera_faspex_on_demand
ibm	aspera high-speed transfer endpoint	cpe:2.3:a:ibm:aspera_high-speed_transfer_endpoint
ibm	aspera high-speed transfer server	cpe:2.3:a:ibm:aspera_high-speed_transfer_server
ibm	aspera high-speed transfer server for cloud pak for integration	cpe:2.3:a:ibm:aspera_high-speed_transfer_server_for_cloud_pak_for_integration
ibm	aspera proxy server	cpe:2.3:a:ibm:aspera_proxy_server
ibm	aspera server on demand	cpe:2.3:a:ibm:aspera_server_on_demand
ibm	aspera shares on demand	cpe:2.3:a:ibm:aspera_shares_on_demand
ibm	aspera streaming	cpe:2.3:a:ibm:aspera_streaming
ibm	aspera transfer cluster manager	cpe:2.3:a:ibm:aspera_transfer_cluster_manager

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

ibm aspera application platform on demandup to 3.7.4 inclusive
ibm aspera faspex on demandup to 3.7.4 inclusive
ibm aspera high-speed transfer endpointup to 3.9.3 inclusive
ibm aspera high-speed transfer serverup to 3.9.3 inclusive
ibm aspera high-speed transfer server for cloud pak for integrationup to 3.9.10 inclusive
ibm aspera proxy serverup to 1.4.3 inclusive
ibm aspera server on demandup to 3.7.4 inclusive
ibm aspera shares on demandup to 3.7.4 inclusive
ibm aspera streamingup to 3.9.3 inclusive
ibm aspera transfer cluster managerup to 1.3.1 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

IBM Aspera Application Platform On Demand
- 3.7.4affected
IBM Aspera Faspex On Demand
- 3.7.4affected
IBM Aspera High-Speed Transfer Endpoint
- 3.9.3affected
IBM Aspera High-Speed Transfer Server
- 3.9.3affected
IBM Aspera High-Speed Transfer Server for Cloud Pak for Integration (CP4I)
- 3.9.10affected
IBM Aspera Proxy Server
- 1.4.3affected
IBM Aspera Server On Demand
- 3.7.4affected
IBM Aspera Shares On Demand
- 3.7.4affected
IBM Aspera Streaming
- 3.9.3affected
IBM Aspera Transfer Cluster Manager
- 1.3.1affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

CVE-2020-4436Certain IBM Aspera applications are vulnerable to buffer overflow after valid authentication, which could allow an attacker with intimate kn
31Monitor
CVE-2020-4434Certain IBM Aspera applications are vulnerable to buffer overflow based on the product configuration and valid authentication, which could a
31Monitor
CVE-2020-4432Certain IBM Aspera applications are vulnerable to command injection after valid authentication, which could allow an attacker with intimate
31Monitor

Published before and after this one in the same product

Later →CVE-2020-4435Jun 10, 2020 · Certain IBM Aspera applications are vulnerable to arbitrary memory corruption based on the product configuration, which could allow an attac
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope