Is CVE-2025-4036 actively exploited?

No active exploitation of CVE-2025-4036 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-4036 be exploited remotely?

Yes. CVE-2025-4036 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-4036?

CVE-2025-4036 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2025-4036

CRITICAL

CVE-2025-4036

CWE-266Published: April 28, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability was found in 201206030 Novel 3.5.0 and classified as critical. This issue affects the function updateBookChapter of the file src/main/java/io/github/xxyopen/novel/controller/author/AuthorController.java of the component Chapter Handler. The manipulation leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Risk Analysis

A critical improper access control vulnerability in the Novel 3.5.0 chapter handler allows remote attackers to perform unauthorized actions. The 9.8 CVSS score reflects the high impact of this flaw on system integrity and access management.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Upgrade to a patched version of Novel if available. Review and enforce access control logic within the application code.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-4036 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.