Skip to main content

Ubuntu EUVDEUVD-2026-89214

| CVE-2026-95281 CRITICAL
Heap-based Buffer Overflow (CWE-122)
2026-09-23 vendor:ubuntu GHSA-cm8v-fpq4-p7rp
9.6
CVSS 3.1 · Vendor: vendor:ubuntu
View

Attack ChainAIDerived

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

  1. Access
    Insufficient data to construct attack chain
  2. Exploit
    Identify affected Ubuntu package
  3. Execution
    Retrieve vulnerability class and CVSS vector
  4. Impact
    Reassess

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Heap buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

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 input contains no vulnerability description, no CVSS vector (so attack vector, complexity, privilege, and user-interaction requirements are all unknown), and no affected-product identification. The only established fact is that the CVE is tracked in the Ubuntu security database, indicating it affects a package distributed with Ubuntu; the specific package, configuration, protocol, or deployment mode required for exploitation is unspecified and must be obtained from the Ubuntu Security Notice or NVD.

Impact

Risk cannot be meaningfully assessed from the available data. The input provides no CVSS base score or vector, no EPSS probability, no KEV status, no POC indication, no SSVC decision points, no CWE, and no vulnerability description - the only signal is that the record was reported/tracked by the Ubuntu security team (vendor:ubuntu), which typically means the CVE affects a package shipped in the Ubuntu archive. With no attack vector, complexity, or privilege data available, it is impossible to determine whether this is a genuine priority or a low-real-risk issue. All exploitation-relevant signals (CVSS, EPSS, KEV, POC) are MISSING and must be retrieved from the Ubuntu Security tracker (ubuntu.com/security/CVE-2026-95281) and NVD before any prioritization decision. Do not treat the absence of a score as low risk - it reflects incomplete intelligence, not a benign finding.

Exploit ScenarioDerived

No exploit scenario can be constructed because the vulnerability description, affected component, and attack vector are all absent from the input. Determining a realistic scenario requires first identifying the affected Ubuntu package and vulnerability class from the Ubuntu Security Notice or NVD. No public exploit availability is indicated in the provided data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 0.5% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Sep 24, 2026

Risk cannot be meaningfully assessed from the available data. CVE-2026-95281 is tracked in the Ubuntu security database, which establishes only that it affects software shipped as a package within the Ubuntu distribution; the upstream project, the vulnerable component, and the affected Ubuntu releases are all unspecified. No description, CVSS vector, CWE, CPE, KEV status, or exploit data was provided, and no public exploit has been identified at time of analysis, so the attack vector, privilege requirements, and user-interaction prerequisites remain unknown and must be sourced from the corresponding Ubuntu Security Notice or the NVD entry.

RemediationAI

No vendor-released patch is identified at time of analysis, and because the vulnerable package is unknown, no specific upgrade version or targeted compensating control can be prescribed yet. The immediate action is triage and monitoring: open Canonical's CVE record for CVE-2026-95281, capture the mapped source package and per-release status flags (vulnerable, not-affected, needs-triage, or released), and subscribe to the ubuntu-security-announce mailing list and the USN RSS feed so the fixing notice reaches you as soon as it ships. On managed fleets, run apt update followed by apt list --upgradable and ubuntu-security-status to surface packages with pending security updates, and patch the identified package once the USN publishes the fixed version; note that packages in universe may remain unfixed indefinitely and may require backporting upstream commits or removing the package. If the component is later identified as a network-facing service, interim compensating controls could include restricting the service to trusted networks or binding it to localhost, disabling the vulnerable feature or module, or placing it behind an authenticating reverse proxy - each of which reduces exposure but also breaks legitimate remote access or functionality and is therefore temporary. Where Ubuntu Pro/ESM coverage applies, confirm entitlement so that fixes for older LTS releases are installable.

Affected VersionsENISA

Chrome 154.0.8037.57 <154.0.8037.57

Affected Packages

euvd chrome fix: 154.0.8037.57

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

No CWE classification, CPE string, or component identifier accompanies this record, so the underlying technology, library, or protocol cannot be determined from the supplied intelligence. The single substantive data point is the reporting source, vendor:ubuntu, which means the record is maintained in Canonical's CVE tracking infrastructure - the database Canonical uses to map CVEs to the Ubuntu source packages and binary packages in main, restricted, universe, and multiverse, and to mark whether a given release is vulnerable, not-affected, or fixed. Consequently the root-cause class is unknown: it could be a memory-safety defect, an injection flaw, an authentication or authorization bypass, a denial-of-service condition, or a configuration issue in any one of the thousands of packages Ubuntu carries. The CVE identifier falls in the 2026 numbering block, and no upstream project advisory is linked, so the CVE may still be in a reserved or pre-disclosure state where only the distro tracker has recorded it. Analysts should resolve the ambiguity by pulling the Ubuntu CVE page for this identifier, checking the linked Launchpad bug and source package name, and cross-referencing NVD once the upstream maintainer publishes details.

Know when the next one hits your stack

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

Vendor (vendor:ubuntu) PRIMARY 9.6 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
SUSE CRITICAL
Red Hat 9.6 HIGH

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

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

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

EPSS Score
0.5%
Top 59% exploitable
Data Quality
3 sources
Confidence: Low

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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.5%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
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
No
Human Impact· derived
Medium

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +48
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.

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Package Hub 15 SP7 Fixed
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Package Hub 15 SP7 Affected

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy