WaratekVRT Sign in

CVE-2019-4279 IBM WebSphere Application Server

Affected softwareIBM WebSphere Application Server
Severity9.8 Critical CVSS 3.1 3 scores
WeaknessDeserialization of untrusted data (CWE-502)
Published17 May 2019
Updated17 Jun 2026

Description

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 160445.

Exploitation status

Working exploit published

A reviewed exploit catalogue lists ready-to-run exploit code for this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 2 indexed Published artifacts you can open, in Exploit-DB, Metasploit; first seen 2019-06-05.
  • EPSS 80% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99.6% of all scored CVEs.
IndexArtifactStarsFirst seen
Exploit-DB IBM Websphere Application Server - Network Deployment Untrusted Data Deserialization Remote Code Execution (Metasploit) 2019-06-05
Metasploit IBM Websphere Application Server Network Deployment Untrusted Data Deserialization Remote Code Execution (excellent rank)

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Decided by A vulnerability class already blocked by an ARMR security rule
Finding Protected by Waratek's ARMR deserialization security rule, which blocks this class of attack at the JVM level without a rule written for this CVE specifically. The CVE's weakness is CWE-502: Deserialization of Untrusted Data.

How to mitigate CVE-2019-4279

Apply the vendor's fix for IBM WebSphere Application Server. Until you can, Waratek RASP blocks exploitation with its deserialization and process rules. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

9.8 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 3.0 9.0 CRITICAL CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H psirt@us.ibm.com Secondary
CVSS 2.0 10.0 none AV:N/AC:L/Au:N/C:C/I:C/A:C NVD Primary

Affected software and releases

Products and versions

1 product, 3 version entries
SourceVendorProductSchemeAffected versions
nvd ibm websphere application server generic 7.0.0.0 · ≥ 8.5.0.0 and ≤ 8.5.5.15 · ≥ 9.0.0.0 and ≤ 9.0.0.11

References

URLTags
http://www.securityfocus.com/bid/108450 Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/160445 VDB Entry, Vendor Advisory
https://www.ibm.com/support/docview.wss?uid=ibm10883628 Vendor Advisory

Timeline

Published2019-05-17By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.