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Ubuntu EUVDEUVD-2026-78409

| CVE-2026-77117 MEDIUM
Loop with Unreachable Exit Condition (Infinite Loop) (CWE-835)
2026-08-27 vendor:ubuntu GHSA-g8c6-x9r9-wj7f
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 unknown. No description, CVSS vector, or supplementary data was provided to identify required configuration, authentication level, network access, or affected feature. No public exploit or KEV entry was identified at time of analysis.
Impact

Risk cannot be assessed. No CVSS vector, EPSS score, KEV status, POC data, or SSVC signals are present. The absence of a published description strongly suggests this CVE is either in the reserved/embargoed state or the data pipeline failed to retrieve NVD content. Until a description and CVSS are available, this should not be prioritized or deprioritized - it is simply unassessable.
Exploit ScenarioDerived

No exploit scenario can be constructed - the vulnerability description is unknown. Attack vector, complexity, and required privileges are entirely undefined from the available data.
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 27, 2026

CVE-2026-77117 is associated with Ubuntu based on a single vendor source tag, but no description, CVSS score, CWE, or supplementary intelligence is available to characterize the vulnerability. No meaningful impact, affected versions, or exploitation conditions can be determined from the provided data. This record should be treated as a placeholder until substantive NVD or vendor advisory data is available.

RemediationAI

No remediation guidance is possible without a description or vendor advisory. Consumers should monitor the Ubuntu Security Notices (USN) portal and the NVD entry for CVE-2026-77117 for updates. No patch version, workaround, or compensating control can be recommended at this time.

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 description, CWE, or CPE data was provided. The sole available signal is attribution to the Ubuntu vendor source. The affected component, root-cause weakness class, and underlying technology are entirely unknown from the supplied intelligence.

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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-2024-20353 HIGH POC
8.6
CVE-2020-13935 HIGH POC
7.5
CVE-2017-16944 HIGH POC
7.5
CVE-2023-34966 HIGH
7.5
CVE-2022-0778 HIGH POC
7.5
CVE-2024-43366 CRITICAL POC
9.1
CVE-2026-25533 HIGH POC
8.8
CVE-2018-8002 HIGH POC
8.8

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
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-2026-77117 ADVISORY https://seclists.org/oss-sec/2026/q3/781 ADVISORY https://ubuntu.com/security/notices/USN-8737-1 ADVISORY https://vuldb.com/vuln/404131 REF https://sourceware.org/bugzilla/show_bug.cgi?id=34556 REF https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0019

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