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Ubuntu Linux CVE-2026-62289

| EUVDEUVD-2026-62188 MEDIUM
Integer Underflow (CWE-191)
2026-08-13 vendor:ubuntu
Information Disclosure Integer Overflow
4.3
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-191
ASVS 5.0
V15 - Secure Coding and Architecture Integer underflow checks
Exploitation Conditions

Exploitation conditions are entirely unknown. No description, CVSS vector, or technical details are available to determine required attack vector, authentication level, user interaction, or configuration prerequisites. No special conditions can be confirmed or denied. Security teams should not make deployment decisions based on this CVE until Ubuntu publishes a corresponding advisory with technical details.
Impact

Risk cannot be meaningfully assessed. No CVSS score or vector is available, EPSS data is absent, the vulnerability is not listed in CISA KEV, no POC has been identified, and no description of impact exists. All risk signals are missing. This CVE should be treated as unassessed until an Ubuntu security advisory (USN) is located and reviewed. Assigning any priority level based on current data would be speculative and potentially misleading.
Exploit ScenarioDerived

No exploit scenario can be constructed. The vulnerability type, attack vector, affected component, and impact are all unknown. Any scenario would be pure speculation not grounded in the provided 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 13, 2026

CVE-2026-62289 is an Ubuntu security update with no public technical details available at time of analysis. The sole intelligence source is a vendor report from Ubuntu, with no description, CVSS score, CWE classification, or affected component provided. The nature of the vulnerability, the affected subsystem, and attacker impact cannot be determined from available data.

RemediationAI

No specific remediation can be recommended without knowing the affected package or fix version. The general guidance is to consult the Ubuntu Security Notices page for any USN referencing CVE-2026-62289 and apply the indicated package update via 'apt-get update && apt-get upgrade'. No exact fix version, advisory URL, or workaround is available from the provided data. No patch availability has been confirmed or denied from available sources.

Affected VersionsENISA

libheif < 1.23.1

Affected Packages

euvd libheif fix: 1.23.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Technical ContextAI · show details

No technical context is determinable from the available data. The CVE description contains only the phrase 'security update', with no CWE, no CPE strings, no CVSS vector, and no references. The reporting source (vendor:ubuntu) indicates this was disclosed through Ubuntu's security advisory process, but no advisory text, affected package, or underlying technology has been provided.

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

Vendor (vendor:ubuntu) PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
SUSE 3.3 LOW
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

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

DescriptionCVE.org

security update

Threat Intelligence Overview

EPSS Score
0.4%
Top 67% exploitable
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vendor GitHub

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

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Integer Overflow MEDIUM

Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.

Information Disclosure MEDIUM

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

Same weakness CWE-191 – Integer Underflow

View all
CVE-2014-0497 CRITICAL POC
9.8
CVE-2015-5212 MEDIUM
6.8
CVE-2017-14496 HIGH POC
7.5
CVE-2014-8768 MEDIUM POC
5.0
CVE-2017-11757 CRITICAL POC
9.8
CVE-2024-23313 CRITICAL POC
9.8
CVE-2021-3323 CRITICAL POC
9.8
CVE-2021-21811 CRITICAL POC
9.8

Same technique Information Disclosure

View all
CVE-2019-2725 CRITICAL POC
9.8
CVE-2021-34523 CRITICAL POC
9.0
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2025-68613 HIGH POC
8.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5

Vendor StatusVendor

SUSE

Severity: Low
Product Status
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Desktop Applications 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected

References

Advisories & patches
ADVISORY https://github.com/strukturag/libheif/commit/f01870c1d7323a3003796d58eba7fff502be994c ADVISORY https://github.com/strukturag/libheif/releases/tag/v1.23.1 ADVISORY https://github.com/strukturag/libheif/security/advisories/GHSA-jc8f-p23p-5hjg ADVISORY https://ubuntu.com/security/notices/USN-8649-1 ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:3597/

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