CVE Intelligence
Medium

CVE-2026-83390 — Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:...

Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component: Diagnostics). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Applications Manager. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Applications Manager accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Applications Manager. CVSS 3.1 Base Score 4.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L).

Published Oct 20, 2026 · Updated Oct 21, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: oracle

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.3% (30-day exploitation probability)+2
  • Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.25%
ahead of 16% of scored CVEs · Oct 21, 2026
Affects
Oracle
Applications Manager
CVSS base
4.2
Medium · 3 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Oracle Applications Manager).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Oracle Applications Manager ≥ 12.2.3 and ≤ 12.2.15 Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
4.2 CVSS 3.1 Medium 1.6 2.5 secalert_us@oracle.com via NIST National Vulnerability Database
4.2 CVSS 3.1 Medium — — GitHub, Inc. via GitHub Security Advisories
4.2 CVSS 3.1 Medium — — oracle via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L (score shown at the top: secalert_us@oracle.com)

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

  • 2026
  • Source status changed · Received → Awaiting Analysis
    Oct 21, 2026 · NIST National Vulnerability Database
  • Affected products added · oracle corporation/oracle applications manager
    Oct 20, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 20, 2026
  • CVSS changed · 4.2
    Oct 20, 2026 · NIST National Vulnerability Database
  • Source status changed · → Received
    Oct 20, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 20, 2026 · NIST National Vulnerability Database
  • CVE published
    Oct 20, 2026 · oracle

Source activity

Repeated readings are counted rather than listed.

  • 1× References added · Oct 21, 2026 – Oct 21, 2026
  • 1× Official description updated · Oct 20, 2026 – Oct 20, 2026

References

3 on the record

Elsewhere on this site

Oracle
every CVE for this vendor

Related CVEs (same products)

  • CVE-2026-91532 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite… 23h
  • CVE-2026-83392 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:... 23h
  • CVE-2026-83388 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:... 23h
  • CVE-2026-101805 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:... 23h
  • CVE-2026-101782 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:... 23h
  • CVE-2026-101742 Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:... 23h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No CISA SSVC assessment.
  • No CWE classification.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-83390 is "Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component:...", rated Medium. It affects Applications Manager (Oracle); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.2 describes technical severity. EPSS 0.25% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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