Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain local logon to Solaris host
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ExploitStage malicious input in Services component
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ExecutionInduce separate user to trigger it
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ImpactGain limited unauthorized data modification
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization verification
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation is confined to the Oracle Solaris 11.4 'Services' component and requires the attacker to first have local logon access to the infrastructure where Solaris runs (AV:L). It additionally requires human interaction from a person OTHER than the attacker (UI:R) - a separate legitimate user must perform some action for the attack to succeed - and the flaw is rated high complexity (AC:H), implying race conditions, specific timing, or non-trivial preconditions. These three factors (local access, dependence on a second user, and high complexity) are the primary limiters and keep realistic risk well below what a network-facing flaw would carry; impact is bounded to partial unauthorized modification of some Solaris-accessible data, with no confidentiality or availability effect. |
| Impact | This is a genuinely low-priority issue, and the signals align rather than conflict. The CVSS 3.1 base score is 2.5 (Low), driven by a vector of AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N - local attack vector, high attack complexity, no privileges but mandatory user interaction, and a single low-integrity impact with no confidentiality or availability consequence. No EPSS score was provided in the input, the CVE is NOT listed in CISA KEV, and no public proof-of-concept is referenced, so exploitation status is 'no public exploit identified at time of analysis.' The only meaningful real-world outcome per Oracle is unauthorized update/insert/delete access to SOME Solaris-accessible data - a limited integrity effect. Note one internal tension in Oracle's own phrasing: the vector states PR:N (no privileges) yet the description says the attacker needs 'logon to the infrastructure where Oracle Solaris executes,' meaning local presence is required even if no application credentials are - treat the AV:L/UI:R combination, not the PR:N label, as the true access barrier. Bottom line: low CVSS backed by local-only access, high complexity, and a dependency on a separate victim's interaction makes this a low real-world risk, not a hidden priority. |
| Exploit ScenarioDerived | An attacker who already has local logon access to a Solaris 11.4 host crafts a malicious input or file in the Services component and then waits for or socially engineers a separate legitimate user to perform an action that triggers the flaw. Because high complexity and victim interaction are both required, successful exploitation is opportunistic and yields only limited unauthorized modification of some Solaris-accessible data. No public exploit code is known at time of analysis. |
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Alert meAnalysisAIv1 – Oct 21, 2026
Oracle Solaris 11.4 exposes a low-severity integrity flaw in its Services component: an attacker with local logon access and no additional privileges (PR:N) can, under high-complexity conditions and with the involvement of a second user, cause unauthorized update, insert, or delete operations against some Solaris-accessible data. The CVSS 3.1 score is 2.5 (AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N), reflecting no confidentiality or availability impact and a narrowly bounded modification-only effect; no public exploit code has been identified at time of analysis and there is no CISA KEV confirmation. The requirement for local logon plus human interaction from someone other than the attacker keeps realistic risk well below that of a network-facing service flaw.
RemediationAI
Patch available per vendor advisory: Oracle addresses CVE-2026-87422 in the Critical Patch Update for October 2026 at https://www.oracle.com/security-alerts/cpuoct2026.html, but the provided data does not specify an exact Solaris 11.4 SRU, so verify the fixed SRU in the CPU before closing the finding. Until the CPU is applied, reduce exposure by restricting local logon to the Solaris host to trusted administrators and service accounts (trade-off: may disrupt legitimate multi-user or support workflows) and by reviewing permissions for service configuration changes so that a second user's interaction cannot be leveraged to alter protected data (trade-off: tighter permissions can break automation or delegated administration). Because UI:R requires another person to act, user awareness and removal of unnecessary interactive sessions on sensitive Solaris systems are useful compensating controls, though they reduce rather than eliminate the risk.
Affected VersionsENISA
Affected Packages
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 issue sits in the Services component of Oracle Solaris 11.4, the layer that manages system service configuration and lifecycle on the Solaris platform. No CWE was supplied, so the precise root-cause class cannot be confirmed from the provided data; the assessed vector is the authoritative guide. AV:L confines the attack to a local logon, AC:H indicates race, timing, or other non-trivial preconditions, PR:N means no extra privileges beyond the ability to log on are required, and UI:R means a distinct legitimate user must take an action for exploitation to succeed. The resulting impact is C:N/I:L/A:N: limited unauthorized modification of some Solaris-accessible data, with no read or denial-of-service effect. The supplied tag "Authentication Bypass" is not supported by the assessed vector, which shows no confidentiality or availability impact; treat that tag as low-fidelity metadata rather than evidence of demonstrated bypass behavior.
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Severity by source
AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Local access and mandatory second-user interaction set AV:L/UI:R; non-trivial preconditions give AC:H; PR:N per Oracle; only limited data modification yields I:L with C:A:N.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Services). The supported version that is affected is 11.4. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Solaris accessible data. CVSS 3.1 Base Score 2.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N).
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-106461
GHSA-8xqp-7rwm-9r7m
NVD
CVE.org
EPSS
Exploit-DB