CVE-2026-1363
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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:XSummary
CVE-2026-1363 is a critical-severity Use of Client-Side Authentication (CWE-603) vulnerability in Org (inferred from references). Its CVSS base score is 9.3 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 43th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and IA-2 (Identification and Authentication (Organizational Users)) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-1363 is a Client-Side Enforcement of Server-Side Security vulnerability (CWE-603) affecting IAQS and I6, software products developed by JNC. The flaw occurs in the web front-end, where server-side security measures are improperly enforced on the client side, enabling manipulation that bypasses intended protections. Published on 2026-01-23, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting critical severity due to high impacts on confidentiality, integrity, and availability.
Unauthenticated remote attackers can exploit this vulnerability over the network with low attack complexity and no privileges or user interaction required. By manipulating the web front-end, attackers can gain administrator privileges on affected systems.
Advisories from TWCERT/CC provide further details on this vulnerability, available at https://www.twcert.org.tw/en/cp-139-10653-117a1-2.html and https://www.twcert.org.tw/tw/cp-132-10652-4cdca-1.html.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-4423
Vulnerability Data
IAQS and I6 developed by JNC has a Client-Side Enforcement of Server-Side Security vulnerability, allowing unauthenticated remote attackers to gain administrator privileges by manipulating the web front-end.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V10.4.10V10.4.15V10.4.16V10.7.1
Mitigating Controls (NIST 800-53 r5) AI
Enforces access authorizations on the server, making client-side bypass ineffective.
Requires server-side identification and authentication of users before granting access.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Server-enforced authentication directly prevents client-only checks from being bypassed.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Requires server-side authentication mechanisms that directly prevent client-only checks.
Promotes secure architecture principles that reject client-only authentication designs.
Security testing can detect missing server-side authentication checks.
Defines application security requirements that include server-side authentication enforcement.
Secure coding standards discourage reliance on client-side authentication logic.
Enforces access restrictions that must be validated on the server, mitigating client-side bypass.