What is the CVSS score of CVE-2026-15057?

CVE-2026-15057 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.3%.

Is there a patch available for CVE-2026-15057?

Yes, a patch is available for CVE-2026-15057. Update the affected software to the latest version immediately.

Websphere Application Server Liberty CVE-2026-15057

EUVD-2026-50025 HIGH

Out-of-bounds Write (CWE-787)

2026-07-28 ibm

GHSA-c636-v45f-pvqr

Buffer Overflow Denial Of Service Memory Corruption IBM Websphere Application Server Liberty

7.5

CVSS 3.1 · Vendor: ibm

View

Vulnerability Assessment

Weakness

CWE

CWE-787

ASVS 5.0

V15 - Secure Coding and Architecture Bounds checking, write limits

MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

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

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 28, 2026

Denial of service in IBM WebSphere Liberty 17.0.0.3 through 26.0.0.7 allows unauthenticated remote attackers to cause service disruption via uncontrolled heap allocation, resulting in high availability impact. No public exploit or active exploitation reported; vendor patch is available.

Affected VersionsENISA

WebSphere Application Server - Liberty 17.0.0.3 ≤26.0.0.7

Affected Packages

euvd websphere_application_server_liberty 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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Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (ibm) PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from Vendor (ibm) · only source for this CVE.

CVSS VectorVendor: ibm

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionCVE.org

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service due to uncontrolled heap allocation.

Threat Intelligence Overview

EPSS Score

0.3%

Top 82% exploitable

Social Media

Sightings

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

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 HIGH

CISA KEV No

Public POC No

EPSS 0.3%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

None

System Exposure· derived

Open

Automatable

Yes

Human Impact· derived

Medium

Technical Impact

Partial

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

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.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Denial of Service MEDIUM

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

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Same weakness CWE-787 – Out-of-bounds Write

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CVE-2015-3113 CRITICAL POC

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CVE-2011-2462 CRITICAL POC

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CVE-2012-1889 HIGH POC

8.8

CVE-2010-3333 HIGH POC

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CVE-2014-1761 HIGH POC

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CVE-2009-3129 HIGH POC

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CVE-2021-1732 HIGH POC

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CVE-2013-3346 CRITICAL POC

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Same technique Buffer Overflow

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CVE-2017-7269 CRITICAL POC

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CVE-2015-5119 CRITICAL POC

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CVE-2020-0796 CRITICAL POC

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CVE-2019-11043 CRITICAL POC

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CVE-2009-0927 HIGH POC

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References

Advisories & patches

PATCH https://www.ibm.com/support/pages/node/7280126 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-15057 ADVISORY https://vuldb.com/vuln/383997

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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