CVE-2026-83154: Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI)

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CRITICAL 9.1REMOTEUPGRADE

CVE-2026-83154 is a critical-severity flaw (CVSS 9.1) affecting siebel crm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as w

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-287, CWE-306
Published	2026-09-15
Last modified	2026-09-21

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-09-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-15 20:18 UTCPublished CVE record published
2026-09-21 16:54 UTCUpdated Record last modified

oracle siebel crm UPGRADE

Affected: >= 17.0 and <= 26.7

Fixed in: newer than 26.7

Safe to downgrade to: a release before 17.0

1. Check installed version

apt-cache policy siebel-crm || rpm -q siebel-crm || siebel-crm --version

2. UPGRADE to newer than 26.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade siebel-crm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade siebel-crm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 17.0 (Debian / Ubuntu)

apt-cache madison siebel-crm sudo apt install siebel-crm=<VERSION_BEFORE_17.0> sudo apt-mark hold siebel-crm

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list siebel-crm sudo dnf downgrade siebel-crm-<VERSION_BEFORE_17.0> sudo dnf versionlock add siebel-crm

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-83154?

siebel crm: upgrade to newer than 26.7. Exact commands for each OS are on this page.

Is CVE-2026-83154 being exploited?

CVE-2026-83154 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-2026-83154 affect?

CVE-2026-83154 affects siebel crm. Severity is critical (CVSS 9.1). Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP t

How urgent is CVE-2026-83154?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-46919 CRITICAL 9.8 UPGRADE Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manag
CVE-2026-46920 HIGH 8.1 UPGRADE Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manag
CVE-2026-46921 HIGH 8.8 UPGRADE Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manag
CVE-2026-46925 HIGH 8.3 UPGRADE Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manag
CVE-2026-46926 HIGH 8.8 UPGRADE Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manag

References

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