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CVE-2026-83462: Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Termi

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CRITICAL 9.8REMOTEUPGRADE

CVE-2026-83462 is a critical-severity flaw (CVSS 9.8) affecting mobile application server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Mobile Application Server. Successful attacks of this vulnerability can result in takeover of Oracle Mobile Application Server. CVSS 3.1 Base Score 9.8 (C

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 57%)
CISA exploited listNo
WeaknessCWE-287, CWE-306
Published2026-09-15
Last modified2026-10-09
Publisher (CNA): Oracle · Vendor: oracle

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Last updated 2026-10-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

oracle mobile application server UPGRADE
Affected: >= 12.2.3 and <= 12.2.15
Fixed in: newer than 12.2.15
Safe to downgrade to: a release before 12.2.3
1. Check installed version
apt-cache policy mobile-application-server || rpm -q mobile-application-server || mobile-application-server --version
2. UPGRADE to newer than 12.2.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade mobile-application-server
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade mobile-application-server
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 12.2.3 (Debian / Ubuntu)
apt-cache madison mobile-application-server sudo apt install mobile-application-server=<VERSION_BEFORE_12.2.3> sudo apt-mark hold mobile-application-server
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list mobile-application-server sudo dnf downgrade mobile-application-server-<VERSION_BEFORE_12.2.3> sudo dnf versionlock add mobile-application-server
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-2026-83462?

mobile application server: upgrade to newer than 12.2.15. Exact commands for each OS are on this page.

Is CVE-2026-83462 being exploited?

CVE-2026-83462 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-2026-83462 affect?

CVE-2026-83462 affects mobile application server. Severity is critical (CVSS 9.8). Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated att

How urgent is CVE-2026-83462?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

References

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