CVE-2019-4279

highpriority · attend · 77EPSS 0.799 · 100 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · weaponized

Likely / severe?

79.9% (100th) EPSS

CVSS 10 · high

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09criticalCVSS:3.0/S:C/A:H/AC:H/I:H/C:H/AV:N/PR:N/UI:N/RL:O/RC:C/E:Usecondary · ENISA EU

v3.09criticalCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · psirt@us.ibm.com USexploitability 2.2 · impact 6

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

affected products (5)

Products and version ranges known to be affected.

IBM WebSphere Application Server≤ 8.5enisa_euvdEU
IBM WebSphere Application Server≤ 9.0enisa_euvdEU
ibm websphere application server= 7.0.0.0nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server8.5.0.0 → 8.5.5.15nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
ibm websphere application server9.0.0.0 → 9.0.0.11nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-05-17modified 2026-06-17

related (3,744)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-63077US	—OT critical	93.6% (100th)	KEV	2026-07-27
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
CVE-2026-58644US	—OT critical	15.9% (97th)	KEV	2026-07-14
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVE-2026-50522US	—OT critical	3.04% (87th)	KEV	2026-07-14
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVE-2026-12569US	critical9.8OT critical	46.0% (99th)	KEV	2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of u…
CVE-2026-45247US	—OT critical	26.2% (98th)	KEV	2026-05-26
Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code exec…

+3739 more

references (26)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan