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Ubuntu Linux EUVDEUVD-2026-87321

| CVE-2026-93682 MEDIUM
Out-of-bounds Read (CWE-125)
2026-09-24 vendor:ubuntu
5.8
CVSS 3.1 · Vendor: vendor:ubuntu
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Attack ChainAIDerived

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

  1. Access
    Insufficient data to determine access
  2. Exploit
    Unknown vulnerability class and vector
  3. Impact
    Impact undetermined

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

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

Exploitation Conditions

Cannot be determined - the description is missing and no CVSS vector is provided, so no product feature, protocol, configuration setting, deployment mode, authentication level, or user-interaction requirement can be identified. The affected component is unknown; only association with the Ubuntu security tracker is established. Retrieve the Ubuntu Security Notice and NVD entry for CVE-2026-93682 to establish the actual prerequisites and limiting factors.

Impact

Risk cannot be meaningfully assessed from the provided data. There is no description, no CVSS score, no CVSS vector, no CWE, no EPSS probability, no KEV listing, and no POC indicator - every risk signal the framework relies on (attack vector, complexity, privileges, exploitation probability, technical impact) is absent. The sole datum is that the record is tracked via the Ubuntu (Canonical) security tracker, which does not by itself indicate the affected component, severity, or whether the issue is remote or local. No public exploit identified at time of analysis. Any severity rating here would be a guess rather than an evidence-based assessment; treat this as UNSCORED pending retrieval of the actual advisory. To triage this properly, pull the Ubuntu Security Notice / CVE tracker entry for CVE-2026-93682 and the upstream NVD record to obtain the affected package, CVSS vector, and CWE before making a prioritization decision.

Exploit ScenarioDerived

No exploit scenario can be constructed because the affected product, attack vector, and vulnerability class are all unknown from the provided data. No POC is indicated. Retrieving the Ubuntu advisory is required before any realistic scenario can be described.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 25, 2026

Risk cannot be meaningfully assessed from the provided data: CVE-2026-93682 is associated only with the Ubuntu security tracker (reported by vendor:ubuntu) and arrives with no description, no CVSS vector, no CWE classification, and no CPE mapping, so the affected Ubuntu source package, the exposed component, and the attack surface are all unidentified. Because no vulnerability class, privilege requirement, or user-interaction condition can be established, it is impossible to state whether this is remote code execution, privilege escalation, denial of service, or information disclosure. No public exploit code exists at time of analysis and no EPSS score or CISA KEV entry was supplied, but that silence reflects missing intelligence rather than a confirmed low risk, and no patch information was included in the input.

RemediationAI

No vendor-released fix can be confirmed at time of analysis because no patch data, fixed version, or advisory reference was included in the provided intelligence; this is an absence of information, not evidence that a fix is unavailable. The first actionable step is to retrieve the Ubuntu CVE tracker entry at https://ubuntu.com/security/CVE-2026-93682 and any linked Ubuntu Security Notice, which together state the affected source package and the exact fixed package versions per release; only then can a patched version be named and deployed. Interim compensating controls must be scoped to the package once identified, but several are safe to prepare now: inventory Ubuntu hosts and record installed versions with dpkg-query or apt list --installed so affected systems can be matched quickly, subscribe to the ubuntu-security-announce mailing list to receive the USN as soon as it is issued, and enable unattended-upgrades for the security pocket so that the fix is applied automatically when it lands, accepting the trade-off that automatic upgrades may restart services or change behaviour during an unattended window. If Ubuntu Pro or ESM is available, enabling it expands coverage to older LTS releases that are no longer in standard support, at the cost of a subscription and of validating that livepatch or ESM updates are compatible with the workload. Network-level or configuration-level mitigations such as restricting access to a service, disabling a feature, or blocking a port cannot be recommended meaningfully here because the exposed component, protocol, and listening surface are unknown, and applying a blanket control would impose availability cost without a demonstrated benefit; any such control should be decided only after the affected package is identified, and should be treated as temporary until the official patched version is installed.

Affected VersionsENISA

PHP 8.2.* <8.2.34
PHP 8.4.* <8.4.26
PHP 8.5.* <8.5.11
PHP 8.3.* <8.3.35

Affected Packages

euvd php_8_2 fix: 8.2.34
euvd php_8_3 fix: 8.3.35
euvd php_8_4 fix: 8.4.26
euvd php_8_5 fix: 8.5.11

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

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

Technical ContextAI · show details

There is no technical substrate to analyze from the supplied data. The sole intelligence signal is the reporting attribution vendor:ubuntu, which places CVE-2026-93682 in Canonical's Ubuntu security tracking workflow rather than in an upstream-only advisory; that workflow associates a CVE with one or more Ubuntu source packages and records per-release fix status for maintained series (for example jammy, noble, and the corresponding ESM streams). No CWE is provided, so the root-cause class cannot be named - it is equally consistent with a memory-safety fault in a native library, an injection flaw in an interpreted component, an access-control error in a daemon, or a cryptographic weakness. No CPE string is present, so the affected vendor/product/version tuple is unknown, and no CVSS vector is present, so neither the attack vector nor the PR/UI metrics can be derived. Consequently there is no protocol, library, or deployment mode to explain. The authoritative starting points for reconstructing this record are the Ubuntu CVE tracker page at https://ubuntu.com/security/CVE-2026-93682, which should list the affected source package and fixed versions per Ubuntu release along with any USN advisory link, and the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-93682 for the CVE record, CWE, and CVSS metrics once published. Until at least one of those sources is retrieved, technical characterization of this CVE is not possible and any statement about its mechanism would be speculation.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vendor:ubuntu) PRIMARY 5.8 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
SUSE 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Red Hat 5.8 MEDIUM

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

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

Lifecycle Timeline

2
Patch available
Sep 25, 2026 - 21:18 EUVD
CVSS changed
Sep 25, 2026 - 20:22 NVD
5.8 (MEDIUM)

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

EPSS Score
0.4%
Top 73% exploitable
Data Quality
5 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 0.4%
Patch available Yes
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
Yes
Human Impact· derived
Medium

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +29
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

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

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

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