IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to execute arbitrary code on a system wit…

published 2020-07-17 6y ago modified 2026-06-17 4mo ago also EUVD-2020-25711

cvss: 8.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 13.2%; EPSS 13.2% chance of exploitation in 30 days, percentile 96%
public exploits: 0; none known

IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to execute arbitrary code on a system with a specially-crafted sequence of serialized objects over the SOAP connector. IBM X-Force ID: 181489.

Patch / fix

links 1

ibm.com/support/pages/node/6250059 advisory

Is CVE-2020-4464 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.

Check with Fencer

Exploit prediction

13.23% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	8.8	CVSS:3.0/AC:L/PR:L/S:U/AV:N/I:H/UI:N/C:H/A:H/RC:C/RL:O/E:U
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/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	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

IBM WebSphere Application Server

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

ibm.com /support/pages/node/6250059
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/181489
vdb-entry, vendor-advisory
zerodayinitiative.com /advisories/ZDI-20-878/
third-party-advisory

Sources

CVE List CVE-2020-4464
NVD CVE-2020-4464

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.