MLEHMANN JSON::XS up to 4.03 on Perl heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in MLEHMANN JSON::XS up to 4.03 on Perl. It has been declared as critical. The affected element is an unknown function. Executing a manipulation can lead to heap-based overflow. This vulnerability appears as CVE-2025-40928. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MLEHMANN JSON::XS up to 4.03 on Perl. It has been declared as critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The weakness was presented by SegFault. The advisory is available at metacpan.org. This vulnerability was named CVE-2025-40928 since 04/16/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 264365 (Linux Distros Unpatched Vulnerability : CVE-2025-40928), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.04 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (264365) and CERT Bund (WID-SEC-2025-2171). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Red Hat Enterprise Linux

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 264365
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-40928

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: JSON::XS 4.04

Timelineinfo

04/16/2025 CVE reserved
09/08/2025 +145 days Advisory disclosed
09/08/2025 +0 days VulDB entry created
10/01/2025 +23 days VulDB entry last update

Sourcesinfo

Advisory: metacpan.org
Researcher: SegFault
Status: Confirmed

CVE: CVE-2025-40928 (🔒)
GCVE (CVE): GCVE-0-2025-40928
GCVE (VulDB): GCVE-100-323098
CERT Bund: WID-SEC-2025-2171 - Red Hat Enterprise Linux (JSON-XS Perl): Schwachstelle ermöglicht Denial of Service

Entryinfo

Created: 09/08/2025 17:29
Updated: 10/01/2025 12:58
Changes: 09/08/2025 17:29 (56), 09/12/2025 02:28 (2), 10/01/2025 12:58 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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