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Unknown CVE-2026-80489

| EUVDEUVD-2026-78411 MEDIUM
Loop with Unreachable Exit Condition (Infinite Loop) (CWE-835)
2026-08-31 vendor:ubuntu GHSA-w45w-pf39-v4pp
Denial Of Service
5.9
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
    Unknown
  2. Exploit
    Unknown
  3. Impact
    Unknown

Vulnerability Assessment

Weakness
CWE
CWE-835
ASVS 5.0
V15 - Secure Coding and Architecture Loop termination conditions
MITRE ATT&CK

1 technique across 1 tactic: Impact

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

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Exploitation Conditions

Exploitation conditions are entirely unknown. No CVE description, CVSS vector, or CWE is available to identify required configuration, authentication level, network access, or affected feature. No special conditions can be stated, and no limiting factors can be identified. This field must remain unresolved until the CVE description is published.
Impact

Risk cannot be assessed. No CVSS vector is available to evaluate attack vector, complexity, or privilege requirements. No EPSS score is present to estimate exploitation probability. KEV status is not confirmed. No POC or active exploitation evidence is present. With a single vendor reporter tag and no description, this CVE cannot be prioritized - it should be flagged for data enrichment before any remediation decision is made. The absence of a description may indicate the CVE is reserved but not yet publicly disclosed.
Exploit ScenarioDerived

No exploit scenario can be constructed. The vulnerability description is absent, and no CVSS vector, CWE, or POC data is available to infer attack vector, required access, or achievable impact. Any scenario constructed at this time would be speculation unsupported by available intelligence.
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 – Aug 31, 2026

CVE-2026-80489 cannot be meaningfully summarized - the description is absent and no CVSS, CWE, CPE, EPSS, KEV, or patch data was provided. The sole intelligence signal is a Ubuntu vendor report, suggesting the affected package may be distributed via Ubuntu repositories, but the specific product, vulnerability class, and impact are entirely unconfirmed. No exploitation status, severity, or affected scope can be determined from available data.

RemediationAI

No remediation can be recommended at this time. No patch version, vendor advisory URL, or affected product was provided. Security teams should monitor the Ubuntu Security Notices feed and the NVD record for CVE-2026-80489 for updates. Until the CVE description and affected product are disclosed, no targeted compensating controls can be suggested. Do not apply generic mitigations without confirming the affected component.

Affected VersionsENISA

glibc 2.3 ≤2.44

Affected Packages

euvd glibc no fix

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.

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Technical ContextAI · show details

No technical context can be established. The CVE description is listed as unknown, no CWE is assigned to indicate a root-cause vulnerability class, and no CPE strings are available to identify affected products or versions. The Ubuntu reporter tag suggests this CVE may relate to a package in the Ubuntu ecosystem, but the underlying technology, library, or protocol involved cannot be identified without further data.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (vendor:ubuntu) PRIMARY 5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SUSE MEDIUM
Red Hat 5.9 MEDIUM

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

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

Lifecycle Timeline

1
CVSS changed
Sep 15, 2026 - 11:22 NVD
5.9 (MEDIUM)

DescriptionCVE.org

[Unknown description]

Threat Intelligence Overview

EPSS Score
0.4%
Top 65% exploitable
Data Quality
5 sources
Confidence: Medium
EUVD NVD CVE.org EPSS MSRC Vendor VulDB

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
No
Human Impact· derived
Medium

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Same weakness CWE-835 – Loop with Unreachable Exit Condition (Infinite Loop)

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CVE-2024-43366 CRITICAL POC
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CVE-2018-8002 HIGH POC
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Same technique Denial Of Service

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CVE-2015-5119 CRITICAL POC
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CVE-2011-2462 CRITICAL POC
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CVE-2011-0611 HIGH POC
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CVE-2012-1889 HIGH POC
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CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
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CVE-2011-0609 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SLES15-SP5-CHOST-BYOS-SAP-CCloud Affected
SLES15-SP6-CHOST-BYOS Affected
SLES15-SP6-CHOST-BYOS-Aliyun Affected
SLES15-SP6-CHOST-BYOS-Azure Affected
SLES15-SP6-CHOST-BYOS-EC2 Affected

References

Advisories & patches
ADVISORY https://access.redhat.com/errata/RHSA-2026:61737 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-80489 ADVISORY https://seclists.org/oss-sec/2026/q3/781 ADVISORY https://ubuntu.com/security/notices/USN-8737-1 ADVISORY https://vuldb.com/vuln/404129 REF https://sourceware.org/bugzilla/show_bug.cgi?id=34568 REF https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0020

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