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Fencer Vulns
high 7.5

CVE-2020-4433 json

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

published 2020-06-10 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25680

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Exploit prediction

5.26% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.5 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
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • IBM Aspera Faspex On Demand
  • IBM Aspera Server On Demand
  • IBM Aspera High-Speed Transfer Server for Cloud Pak for Integration (CP4I)
  • IBM Aspera High-Speed Transfer Endpoint
  • IBM Aspera Streaming
  • IBM Aspera Transfer Cluster Manager
  • IBM Aspera High-Speed Transfer Server
  • IBM Aspera Shares On Demand
  • IBM Aspera Application Platform On Demand
  • IBM Aspera Proxy Server

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.