CVE-2026-10852: IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to denial of serv

Routine

MEDIUM 5.9REMOTEMITIGATE

CVE-2026-10852 is a medium-severity flaw (CVSS 5.9) affecting i. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to denial of service in the WebSphere WebServer Plug-in component when an attacker can pass crafted requests to the web server.

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-476
Published	2026-06-22
Last modified	2026-10-25

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-22 20:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

ibm i MITIGATE

Affected: 7.3 · 7.4 · 7.5 · 7.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.3

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-10852?

i: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-10852 being exploited?

CVE-2026-10852 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-10852 affect?

CVE-2026-10852 affects i. Severity is medium (CVSS 5.9). IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to denial of service in the WebSphere WebServer Plug-in component when an attacker can pass crafted requests to the web server.

How urgent is CVE-2026-10852?

Priority 36/100. Remotely exploitable, no login, no user action

Software pages

IBM WebSphere vulnerabilities

Related CVEs

CVE-2026-9072 HIGH 8.1 UPGRADE IBM WebSphere Application Server and IBM WebSphere Application Server Liberty - when using Intelligent Managem
CVE-2026-8858 HIGH 7.5 UPGRADE IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code ex
CVE-2026-4942 MEDIUM 5.9 MITIGATE IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to send a specifically crafted message and downgrad
CVE-2026-18683 HIGH 8.8 MITIGATE IBM i 7.6, 7.5, 7.4, and 7.3 is vulnerable to privilege escalation via Navigator for i
CVE-2026-17095 HIGH 8.3 MITIGATE IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due t

References

← Back to latest CVEs