Siemens OpenV2G up to 0.9.5 EXI Parser buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Siemens OpenV2G up to 0.9.5. It has been classified as critical. This affects an unknown function of the component EXI Parser. This manipulation causes buffer overflow. This vulnerability is tracked as CVE-2025-24956. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Siemens OpenV2G up to 0.9.5. Affected by this vulnerability is an unknown code block of the component EXI Parser. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability has been identified in OpenV2G (All versions < V0.9.6). The OpenV2G EXI parsing feature is missing a length check when parsing X509 serial numbers. Thus, an attacker could introduce a buffer overflow that leads to memory corruption.

The advisory is shared at cert-portal.siemens.com. This vulnerability is known as CVE-2025-24956 since 01/29/2025. The exploitation appears to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.9.6 eliminates this vulnerability.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 6.2
CNA Vector (siemens): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenV2G 0.9.6

Timelineinfo

01/29/2025 🔍
02/11/2025 +13 days 🔍
02/11/2025 +0 days 🔍
09/24/2025 +225 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-647005
Status: Confirmed

CVE: CVE-2025-24956 (🔍)
GCVE (CVE): GCVE-0-2025-24956
GCVE (VulDB): GCVE-100-295237

Entryinfo

Created: 02/11/2025 12:28
Updated: 09/24/2025 03:35
Changes: 02/11/2025 12:28 (43), 02/11/2025 12:31 (34), 09/24/2025 03:35 (12)
Complete: 🔍
Committer: mitr
Cache ID: 216::103

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