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CVE-2020-4433

28
FAUCET Score

CVE-2020-4433 is a stack-based buffer overflow vulnerability in several IBM Aspera applications, including Aspera Application Platform On Demand, Faspex On Demand, and High-Speed Transfer Server. This flaw, caused by improper bounds checking, allows a remote attacker with intimate server knowledge to execute arbitrary code with root privileges or cause a denial of service. With a CVSS score of 7.5 (HIGH), it requires high attack complexity but has a significant impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.7.4CPE matchmatch criteria
cpe:2.3:a:ibm:aspera_application_platform_on_demand:*:*:*:*:*:*:*:*
<= 3.7.4CPE matchmatch criteria
cpe:2.3:a:ibm:aspera_faspex_on_demand:*:*:*:*:*:*:*:*
<= 3.9.3CPE matchmatch criteria
cpe:2.3:a:ibm:aspera_high-speed_transfer_endpoint:*:*:*:*:*:*:*:*
<= 3.9.3CPE matchmatch criteria
cpe:2.3:a:ibm:aspera_high-speed_transfer_server:*:*:*:*:*:*:*:*
<= 3.9.10CPE matchmatch criteria
cpe:2.3:a:ibm:aspera_high-speed_transfer_server_for_cloud_pak_for_integration:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.13%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0513 is in the 91st percentile among its peer group of 1,162 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/180814
VDB EntryVendor Advisory
ibm.com / support/pages/node/6221324
Vendor Advisory