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Oracle TimesTen EUVDEUVD-2026-106395

| CVE-2026-87354 MEDIUM
Information Exposure (CWE-200)
2026-10-20 secalert_us@oracle.com GHSA-jvw9-4c48-hcrf
4.3
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged network access
  2. Exploit
    Send crafted HTTPS request to Kubernetes Operator
  3. Impact
    Read unauthorized subset of TimesTen data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the attacker to already possess a low-privileged authenticated account (CVSS PR:L) with network reachability to the Oracle TimesTen Kubernetes Operator over HTTPS. The specific affected deployment is the Kubernetes Operator component on affected versions 22.1 through 22.1.40.0 and 26.1 through 26.1.1.2.0. Limiting factors: valid low-level credentials are mandatory (not exploitable by fully unauthenticated attackers despite AV:N), the operator endpoint must be network-accessible to the attacker, and impact is restricted to read-only access to a subset of data (no write/integrity or availability effect). No specific non-default configuration flag is named in the description, so default-deployed operators appear in scope.

Impact

This is a moderate-severity information-disclosure issue (CVSS 3.1 base 4.3) in the Kubernetes Operator component of Oracle TimesTen In-Memory Database. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) indicates network exploitation over HTTPS at low attack complexity, but it explicitly requires low-level privileges (PR:L) - so this is NOT an unauthenticated remote compromise. Impact is limited to unauthorized read access to a subset of data (C:L only; no integrity or availability impact). No EPSS score, CISA KEV listing, or public POC was provided in the input, so there is no signal of active or imminent exploitation; exploitation status is best characterized as no public exploit identified at time of analysis. Oracle rates it 'easily exploitable,' but the privilege requirement and read-only, partial-data impact keep real-world risk modest. CONFLICT TO NOTE: the input Tag 'Authentication Bypass' contradicts the CVSS vector - an authentication bypass would imply PR:N, whereas the description and vector both state a low-privileged (authenticated) attacker and only confidentiality impact; this tag appears mislabeled and should be verified. No CWE is assigned, limiting classification precision.

Exploit ScenarioDerived

An attacker who already holds a low-privileged account with network access to the TimesTen Kubernetes Operator sends crafted HTTPS requests to the operator's API/endpoint and obtains read access to a subset of database-accessible data they should not see. No user interaction is required, but valid low-level credentials are. No public exploit code was identified in the provided data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Information disclosure in the Kubernetes Operator component of Oracle TimesTen In-Memory Database (22.1 through 22.1.40.0 and 26.1 through 26.1.1.2.0) lets a low-privileged authenticated attacker who can reach the operator's HTTPS endpoint read a limited subset of data the database exposes. The assessed CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, base 4.3) confirms that valid low-level credentials are a hard prerequisite - this is not exploitable by fully unauthenticated remote users - and that there is no integrity or availability impact. No public exploit code or confirmed active exploitation was identified at time of analysis, so severity is driven by exposure of the operator endpoint rather than by an imminent attack campaign.

RemediationAI

Apply the Oracle Critical Patch Update for October 2026 (https://www.oracle.com/security-alerts/cpuoct2026.html), upgrading the Kubernetes Operator to a build later than 22.1.40.0 on the 22.1 line or later than 26.1.1.2.0 on the 26.1 line; the CPU is the only authoritative source for the exact fixed build numbers, so confirm the target release against it before scheduling the rollout and redeploy the operator image and its RBAC manifests together. Until patching is complete, reduce exposure by scoping Kubernetes NetworkPolicy or ingress rules so only trusted control-plane and administrative namespaces can reach the operator's HTTPS port - the trade-off is that legitimate CI/CD or multi-team automation reaching the operator must be explicitly allow-listed. Tighten authorization around any service accounts and credentials that can call the operator, dropping broad ClusterRole bindings to least privilege, which may break existing automation that relies on over-broad permissions. Because exploitation requires an existing low-privileged account, rotate or audit operator-scoped credentials and monitor operator API access logs for reads outside a caller's expected data scope; if the operator cannot be isolated or upgraded promptly, consider temporarily suspending non-essential operator-managed workflows, accepting the loss of automated lifecycle management as the cost.

Affected VersionsENISA

Oracle TimesTen In-Memory Database 26.1 ≤26.1.1.2.0
Oracle TimesTen In-Memory Database 22.1 ≤22.1.40.0

Affected Packages

euvd oracle_timesten_in_memory_database no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected technology is the Kubernetes Operator shipped with Oracle TimesTen In-Memory Database - a controller that extends the Kubernetes API to automate deployment, scaling, and lifecycle management of TimesTen instances, and which exposes an HTTPS-facing interface for its management operations. Rather than a memory-safety defect, the issue is an access-control weakness: the supplied data carries no CWE identifier, but the assessed vector (network-reachable, low privileges required, confidentiality-only impact with no write or availability effect) is consistent with an authorization gap in which a caller holding only low-privileged credentials can retrieve data beyond their intended scope through the operator's HTTPS surface. The third-party tagging of "Authentication Bypass" and "Kubernetes" points at that same trust boundary, but the authoritative assessment places the bar at an existing low-privileged account, so the practical risk model is privilege-boundary erosion inside the cluster rather than anonymous intrusion. Default-deployed operators appear in scope, since no non-default configuration flag is identified as a precondition.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 4.3 MEDIUM

Network HTTPS vector (AV:N) at low complexity, requiring a low-privileged account (PR:L), yielding only partial confidentiality loss (C:L) with no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionCVE.org

Vulnerability in Oracle TimesTen In-Memory Database (component: Kubernetes Operator). Supported versions that are affected are 22.1-22.1.40.0 and 26.1-26.1.1.2.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle TimesTen In-Memory Database. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle TimesTen In-Memory Database accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Threat Intelligence Overview

EPSS Score
0.3%
Top 80% exploitable
Prevalence
Low
niche specialized in-memory database; Kubernetes Operator deployment narrower still
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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