CVE-2026-27776

HighRCE

Published: 27 February 2026

Published

27 February 2026

Modified

23 March 2026

KEV Added

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Patch

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CVSS Score v4 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Score 0.0037 28.4th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-27776 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Intra-Mart Accel Platform. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 CM-7 (Least Functionality) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-27776, published on 2026-02-27, is an insecure deserialization vulnerability (CWE-502) in the IM-LogicDesigner module of the intra-mart Accel Platform. The issue affects systems only when the IM-LogicDesigner module is deployed.

An attacker can exploit this vulnerability over the network (AV:N) with low attack complexity (AC:L) and no required privileges (PR:N), but it requires user interaction (UI:R) from an administrative user. By tricking such a user into importing a crafted file, the attacker can achieve arbitrary code execution, resulting in high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H) within an unchanged security scope (S:U). The CVSS v3.1 base score is 8.8.

Vendor and advisory sources provide mitigation guidance, including patches, at https://global.intra-mart.support/hc/en-us/articles/55266898383641 and https://jvn.jp/en/jp/JVN80500630/.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-9007

Vulnerability details

IM-LogicDesigner module of intra-mart Accel Platform contains insecure deserialization issue. This can be exploited only when IM-LogicDesigner is deployed on the system. Arbitrary code may be executed when some crafted file is imported by a user with the administrative privilege.

CWE(s): CWE-502

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1204.002 Malicious File Execution

An adversary may rely upon a user opening a malicious file in order to gain execution.

attack.mitre.org →

Why these techniques?

Insecure deserialization enables RCE on the server when an admin imports a crafted file (T1204.002); the network attack vector on a public-facing enterprise platform directly maps to T1190.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0