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Outside In Technology EUVDEUVD-2026-106705

| CVE-2026-91457 HIGH
Improper Input Validation (CWE-20)
2026-10-20 secalert_us@oracle.com GHSA-jc76-99xj-rg9v
7.8
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
    Gain local logon to host
  2. Delivery
    Deliver crafted malicious file
  3. Exploit
    Victim processes file via Image Export SDK
  4. Execution
    Trigger memory corruption in parser
  5. Impact
    Execute code and take over component

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions

Exploitation requires (1) the attacker to have local logon access to the host/infrastructure where Oracle Outside In Technology 8.5.8 runs, and (2) human interaction from a victim other than the attacker - specifically, a user or service must process an attacker-supplied malicious file through the Outside In Image Export SDK (the file-conversion/export code path). It is NOT remotely exploitable over a network despite the PR:N marking. Key LIMITING factors: the local-only attack vector (AV:L), the mandatory user-interaction step (UI:R) which breaks automated/worm-style exploitation, and the fact that only the Image Export SDK component of version 8.5.8 is affected. Deployments that do not expose this SDK to untrusted input files, or that isolate the conversion process, materially reduce risk.

Impact

This is a moderate-priority local vulnerability rather than a critical internet-facing threat. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms the attack is LOCAL and requires human interaction - despite PR:N ('unauthenticated'), Oracle's own description clarifies the attacker needs 'logon to the infrastructure where Oracle Outside In Technology executes,' meaning this is not remotely reachable over a network. The low attack complexity and full C:H/I:H/A:H impact (product takeover) raise the base score to 7.8, but the AV:L + UI:R combination substantially limits real-world exploitability: an attacker must get a victim to process a malicious file through the SDK. No EPSS score, CISA KEV listing, or public POC is present in the provided data, so there is no evidence of active or imminent exploitation. SIGNAL CONFLICT TO NOTE: the CVSS vector marks PR:N (unauthenticated) while the description requires 'logon to the infrastructure' - these are reconcilable under Oracle's convention (the attacker needs host access but not application privileges), but defenders should treat this as a local/host-access flaw, not a remote one. The 'Information Disclosure' tag also understates the stated impact, which is full takeover across confidentiality, integrity, and availability.

Exploit ScenarioDerived

An attacker crafts a malicious document or image file that triggers a memory-corruption flaw in the Outside In Image Export SDK's file parser. The attacker lures a local user or a service account on the host to process (convert/export) that file, and the SDK's handling of the malformed input leads to code execution and takeover of the Outside In component. No public exploit code was identified at time of analysis, and successful exploitation requires human interaction from someone other than the attacker.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

Local file-processing flaws in the Outside In Image Export SDK shipped with Oracle Outside In Technology 8.5.8 let an attacker who can log on to the host achieve full takeover of the affected SDK process by convincing another user or service to open a crafted file. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms this is a local, unauthenticated attack that requires victim interaction rather than something reachable over the network, and only the Image Export SDK component of the 8.5.8 release is in scope. No public exploit code has been identified at time of analysis and there is no CISA KEV listing, making this a moderate-priority issue that is chiefly dangerous where the SDK is exposed to untrusted documents on shared or multi-tenant conversion hosts.

RemediationAI

Patch status: patch available per vendor advisory (Oracle Critical Patch Update, October 2026). Apply the Outside In Technology release delivered in that CPU to all hosts and container images running the Image Export SDK at 8.5.8, following the component and version details in https://www.oracle.com/security-alerts/cpuoct2026.html; because Outside In is an embedded SDK, also rebuild and redeploy every consuming application rather than only updating the host package. Where immediate patching is not possible, the practical compensating controls follow directly from the AV:L/UI:R vector: stop feeding untrusted or externally sourced documents into the Image Export SDK code path (reject or quarantine them at the application boundary) - effective but reduces functionality for legitimate conversions; run the conversion service under a low-privilege dedicated account or in a sandboxed/ephemeral container with no access to sensitive file shares or credentials - limits post-exploitation impact but adds operational overhead and can break conversions that need network or filesystem access; disable or uninstall the image export feature where it is not a required business function - removes the attack surface entirely at the cost of that capability; and restrict interactive logon and job-submission rights on conversion hosts to accounts that genuinely need them, since the attacker must first obtain local logon access. Monitor for unusually crafted documents submitted to conversion pipelines as a detection layer while remediation is in progress.

Affected VersionsENISA

Oracle Outside In Technology 8.5.8

Affected Packages

euvd oracle_outside_in_technology 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

Oracle Outside In Technology is a set of developer SDKs (viewing, search/export, image export, PDF export, and related filters) used to parse and render hundreds of third-party file formats inside applications, content-management systems, e-mail gateways and document-conversion services. This CVE affects specifically the Image Export SDK component - the code path that rasterizes or exports images out of input documents - in version 8.5.8 of the Fusion Middleware product family. The root cause is not classified with a CWE in the available data, but the impact pattern (Confidentiality, Integrity and Availability all High under AV:L/PR:N/UI:R/S:U) is consistent with unsafe handling of malformed input inside the parser/converter, where crafted file content can corrupt memory or otherwise subvert the conversion process in the context of the user running it. The vector is deliberately local: AV:L means the attacker must already hold logon access to the infrastructure executing Outside In, PR:N means no additional privileges on the SDK itself are needed, and UI:R means the victim (a user, or an automated service account processing files) must open or submit the attacker's file. It is therefore not a network-reachable bug and cannot self-propagate; the practical explosion surface is limited to deployments that feed untrusted documents into the SDK.

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Severity by source

Vendor (oracle) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 7.8 HIGH

AV:L because the malicious file must be processed on the host and PR:N because no application privileges are needed, but UI:R reflects the required victim interaction; full CIA impact yields takeover.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Image Export SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Outside In Technology executes to compromise Oracle Outside In Technology. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Outside In Technology. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Outside In Technology 8.5.8 Image Export SDK contains local file-processing flaws that can let a logged-on attacker take over the affected SDK process when another user or service opens a crafted file. Because exploitation requires local access and victim interaction, the practical exposure is concentrated on shared or multi-tenant document-conversion hosts that process untrusted files, where compromise could affect confidentiality and availability of conversion workflows. No public exploit identified at time of analysis and no vendor-released patch identified at time of analysis, so leadership should treat this as a contained but time-bound risk requiring mitigation and upgrade planning.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Restrict local logon to hosts running Oracle Outside In Technology 8.5.8 Image Export SDK, run conversion processes with least privilege, isolate or containerize document conversion, block or sandbox untrusted files, and monitor for anomalous file-processing activity.

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Prevalence
Medium
document-conversion SDK embedded in many enterprise content products, not standalone-ubiquitous
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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
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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