CVE-2026-18544 Vulnerability Analysis & Exploit Details

CVE-2026-18544
Vulnerability Scoring

8.1

/10

Severe Risk

Cybersecurity professionals consider CVE-2026-18544 an immediate threat requiring urgent mitigation.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: Low
Some privileges are necessary to exploit the vulnerability.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-18544 Details

Status: Analyzed

Last updated: 🕡 02 Sep 2026, 18:59 UTC
Originally published on: 🕘 19 Aug 2026, 21:16 UTC

Time between publication and last update: 13 days

CVSS Release: version 3

CVSS3 Source

psirt@us.ibm.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2026-18544 Vulnerability Summary

CVE-2026-18544: IBM Portieris 0.5.0 through 0.14.2 could allow a remote authenticated attacker to bypass image policy enforcement due to improper authorization of pod owner references.

Assessing the Risk of CVE-2026-18544

Access Complexity Graph

The exploitability of CVE-2026-18544 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-18544

CVE-2026-18544 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-18544, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-18544, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: High
Exploiting CVE-2026-18544 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2026-18544 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: None
CVE-2026-18544 does not impact system availability.

CVE-2026-18544 References

External References

https://www.ibm.com/support/pages/node/7284125

CWE Common Weakness Enumeration

CWE-862

CAPEC Common Attack Pattern Enumeration and Classification

Exploitation of Thunderbolt Protection Flaws CAPEC-665 An adversary leverages a firmware weakness within the Thunderbolt protocol, on a computing device to manipulate Thunderbolt controller firmware in order to exploit vulnerabilities in the implementation of authorization and verification schemes within Thunderbolt protection mechanisms. Upon gaining physical access to a target device, the adversary conducts high-level firmware manipulation of the victim Thunderbolt controller SPI (Serial Peripheral Interface) flash, through the use of a SPI Programing device and an external Thunderbolt device, typically as the target device is booting up. If successful, this allows the adversary to modify memory, subvert authentication mechanisms, spoof identities and content, and extract data and memory from the target device. Currently 7 major vulnerabilities exist within Thunderbolt protocol with 9 attack vectors as noted in the Execution Flow.

Vulnerable Configurations

cpe:2.3:a:ibm:portieris:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.9.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.12.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.16:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.16:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.18:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.18:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.19:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.19:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.20:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.20:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.21:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.21:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.22:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.22:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.23:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.23:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.24:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.24:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.25:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.25:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.26:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.26:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.27:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.27:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.28:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.28:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.29:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.29:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.30:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.30:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.31:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.31:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.32:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.32:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.33:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.33:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.34:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.34:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.35:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.35:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.36:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.36:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.37:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.37:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.38:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.13.38:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:portieris:0.14.2:*:*:*:*:*:*:*

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