Cyber Resilience

CVE-2026-10521

Published
23 June 2026
Modified
23 June 2026
CVSS Score v4 8.6
Click a component to see what it means
Raw vectorCVSS: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 0.0055 45th percentile
Risk Priority 31 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-10521 is a high-severity Forced Browsing (CWE-425) vulnerability in Certvde (inferred from references). Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique File and Directory Discovery (T1083); ranked at the 45th 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-24 (Access Control Decisions) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

An high privileged remote attacker can access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.

CWE(s)
CWE-425

Related Threats

MITRE ATT&CK Enterprise Techniques

T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
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 →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2017-17736Shared CWE-425
CVE-2025-15587Shared CWE-425
CVE-2025-26689Shared CWE-425
CVE-2025-48201Shared CWE-425
CVE-2025-27581Shared CWE-425
CVE-2023-44320Shared CWE-425
CVE-2025-53073Shared CWE-425
CVE-2023-28160Shared CWE-425
CVE-2023-50935Shared CWE-425
CVE-2024-7753Shared CWE-425

Affected Assets

Certvde
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match

AC-3 directly requires enforcement of authorizations for access to resources such as URLs, scripts, and files, structurally preventing forced browsing.

AC-24 Access Control Decisions good match

AC-24 requires that access-control decisions be applied to every request, addressing the missing enforcement on restricted URLs.

AC-6 Least Privilege partial match

AC-6 requires restricting authorizations to the minimum needed, reducing the set of resources that must be protected against direct requests.

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.

PR.AA-05 partial match
prevents

Directly requires policy-driven definition, enforcement, and review of authorizations on resources such as URLs.

PR.IR-01 partial match
prevents

Protects environments from unauthorized logical access, which includes preventing direct requests to restricted paths.

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.

A.5.15 Access control partial match
prevents

Access control policy directly requires authorization checks on all resources, preventing forced browsing.

A.5.18 Access rights partial match
degrades

Managing access rights ensures every URL/script/file is explicitly authorized, mitigating direct request attacks.

A.8.2 Privileged access rights partial match
degrades

Privileged access rights control enforces least-privilege checks on restricted endpoints.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC can include authorization design, yet the control itself does not guarantee runtime enforcement.

A.8.26 Application security requirements partial match
prevents

Application security requirements may specify authorization rules, but the control does not implement them.

A.8.28 Secure coding partial match
prevents

Secure coding practices reduce the likelihood of missing authorization checks, yet do not guarantee coverage.

References