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Fencer Vulns
high 8.8

CVE-2020-4436 json

Certain IBM Aspera applications are vulnerable to buffer overflow after valid authentication, which could allow an attacker with intimate k…

published 2020-06-10 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25683

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Certain IBM Aspera applications are vulnerable to buffer overflow after valid authentication, which could allow an attacker with intimate knowledge of the system to execute arbitrary code through a service. IBM X-Force ID: 180902.

Exploit prediction

3.09% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/AV:N/A:H/C:H/S:U/PR:L/AC:L/UI:N/I:H/RL:O/E:U/RC:C
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 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected products

  • IBM Aspera Faspex 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 Server On Demand
  • IBM Aspera Shares On Demand
  • IBM Aspera Application Platform On Demand
  • IBM Aspera Transfer Cluster Manager
  • IBM Aspera High-Speed Transfer Server
  • IBM Aspera Proxy Server

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.