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Fencer Intel
medium 6.6

CVE-2020-4163 json

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0, under specialized conditions, could allow an authenticated user to create a malici…

published 6y ago modified 4mo ago also EUVD-2020-25410

cvss
6.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0, under specialized conditions, could allow an authenticated user to create a maliciously crafted file name which would be misinterpreted as jsp content and executed. IBM X-Force ID: 174397.

Patch / fix

Is CVE-2020-4163 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

1.55% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 6.6 CVSS:3.0/AV:N/AC:H/A:H/I:H/UI:N/C:H/PR:H/S:U/E:U/RC:C/RL:O
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA 3.0 6.6 CVSS:3.0/AV:N/AC:H/PR:H/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 WebSphere Application Server

References

Sources

Fencer Intel 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.