Oracle WebCenter Portal 11.1.1.9.0 Portlet Services xml external entity reference

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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9.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Oracle WebCenter Portal 11.1.1.9.0 and classified as very critical. The affected element is an unknown function of the component Portlet Services. Such manipulation leads to an unknown weakness. This vulnerability is traded as CVE-2020-10683. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Oracle WebCenter Portal 11.1.1.9.0 (Content Management System). Affected by this issue is an unknown code of the component Portlet Services. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability.

The weakness was shared 01/20/2021 as Oracle Critical Patch Update Advisory - January 2021. The advisory is shared for download at oracle.com. This vulnerability is handled as CVE-2020-10683. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/22/2026).

As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 294867 (Oracle Siebel Server <= 25.11 (January 2026 CPU)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (294867). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 294867
Nessus Name: Oracle Siebel Server <= 25.11 (January 2026 CPU)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

03/20/2020 🔍
01/20/2021 +306 days 🔍
01/20/2021 +0 days 🔍
01/20/2021 +0 days 🔍
01/22/2026 +1828 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: Oracle Critical Patch Update Advisory - January 2021
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-10683 (🔍)
GCVE (CVE): GCVE-0-2020-10683
GCVE (VulDB): GCVE-100-168284

Entryinfo

Created: 01/20/2021 19:47
Updated: 01/22/2026 11:52
Changes: 01/20/2021 19:47 (39), 02/16/2021 17:24 (6), 02/16/2021 17:28 (18), 01/22/2026 11:52 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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