CVE-2025-40928

7.5 HIGH

Published: September 08, 2025 Modified: November 04, 2025

Description

JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://metacpan.org/release/MLEHMANN/JSON-XS-4.03/source/XS.xs#L256

Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e

https://security.metacpan.org/patches/J/JSON-XS/4.03/CVE-2025-40928-r1.patch

Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e

http://www.openwall.com/lists/oss-security/2025/09/08/2

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/09/msg00033.html

Source: af854a3a-2127-422b-91ae-364da2661108

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.1%

28th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-122

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