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CVE-2020-4434

20
FAUCET Score

CVE-2020-4434 describes a buffer overflow vulnerability in certain IBM Aspera applications, including Aspera High-Speed Transfer Server and Aspera Shares on Demand. This flaw, rated 7.5 HIGH on CVSS, allows an authenticated attacker with specific system knowledge to execute arbitrary code or cause a denial-of-service via the HTTP fallback service due to high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

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
2.60%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0260 is in the 80th percentile among its peer group of 1,162 CVEs.

Social Chatter

No social media mentions found for this CVE.

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/180900
VDB EntryVendor Advisory
ibm.com / support/pages/node/6221324
Vendor Advisory