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CVE-2020-4436

25
FAUCET Score

CVE-2020-4436 describes a buffer overflow vulnerability in several IBM Aspera applications, including High-Speed Transfer Server and Faspex On Demand. An authenticated attacker with intimate system knowledge could exploit this flaw to execute arbitrary code through a service. Rated with a CVSS score of 7.5 (HIGH), this vulnerability requires high attack complexity and low privileges, but could lead to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

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

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.09%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0309 is in the 83rd 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/180902
VDB EntryVendor Advisory
ibm.com / support/pages/node/6221324
Vendor Advisory