VulnerabilityPublished 15 Sep 2026

CVE-2026-83078: Oracle Siebel CRM Cloud Applications · Improper Access Control

Affects Oracle Siebel CRM Cloud ApplicationsSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 3.1 base score

8.2High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Oracle CorporationSiebel CRM Cloud Applications	Affected >=22.3 <=26.7	Fixed in–

AI-suggested

Oracle has released a Critical Security Patch Update that addresses this vulnerability along with many others. Customers should promptly apply the relevant security patches as detailed in Oracle's September 2026 Critical Security Patch Update advisory (https://www.oracle.com/security-alerts/cspusep2026.html). Since this is not a cloud-hosted service, remediation requires customers to update their Siebel CRM Cloud Applications installations to patched versions. Oracle strongly recommends remaining on actively supported versions and applying patches without delay to mitigate this vulnerability.

Description

CVE-2026-83078 is a high-severity vulnerability in Oracle Siebel CRM Cloud Applications (Siebel Cloud Manager component) affecting versions 22.3 through 26.7. It allows an unauthenticated attacker with network access via HTTP to gain unauthorized access to critical data and perform unauthorized update, insert, or delete operations on some accessible data. The vulnerability has a CVSS 3.1 base score of 8.2, indicating high impact on confidentiality and integrity. Oracle has published a Critical Security Patch Update advisory addressing this and many other vulnerabilities, recommending customers apply patches promptly. No explicit patch link for this CVE was provided, but Oracle strongly advises applying the available security patches. The vulnerability is not in a cloud-hosted service, so remediation depends on customer patching.

Impact

Successful exploitation allows an unauthenticated remote attacker to access critical data within Siebel CRM Cloud Applications and to perform unauthorized data modifications such as updates, inserts, or deletions on some accessible data. This compromises confidentiality and integrity of the affected system's data. There is no reported impact on availability. The vulnerability affects multiple versions of the product and could lead to significant data exposure or manipulation if exploited.

Summary

CVE-2026-83078 is a vulnerability in Oracle Siebel CRM Cloud Applications, specifically in the Siebel Cloud Manager component. It affects versions from 22.3 up to and including 26.7. The flaw allows an unauthenticated attacker with network access over HTTP to compromise the application, resulting in unauthorized access to critical data and unauthorized modification (update, insert, delete) of some data. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N) indicates network attack vector, low attack complexity, no privileges or user interaction required, with high confidentiality and low integrity impact, and no availability impact. Oracle's September 2026 Critical Security Patch Update advisory includes this vulnerability among 673 fixes and strongly recommends applying patches without delay. No known exploits in the wild have been reported.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

oracle.com/security-alerts/cspusep2026.html (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Sep 2026, 05:38 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

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