Siemens SiPass integrated AC5102/SiPass integrated ACC-AP Firmware Update signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Siemens SiPass integrated AC5102 and SiPass integrated ACC-AP. Impacted is an unknown function of the component Firmware Update Handler. This manipulation causes signature verification. This vulnerability appears as CVE-2022-31807. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Siemens SiPass integrated AC5102 and SiPass integrated ACC-AP (version now known). It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component Firmware Update Handler. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect integrity. The summary by CVE is:

A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Affected devices do not properly check the integrity of firmware updates. This could allow a local attacker to upload a maliciously modified firmware onto the device. In a second scenario, a remote attacker who is able to intercept the transfer of a valid firmware from the server to the device could modify the firmware "on the fly".

It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2022-31807 since 05/30/2022. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/09/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

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: 5.7
VulDB Meta Temp Score: 5.7

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

NVD Base Score: 5.5
NVD Vector: 🔍

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

CVSSv2info

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

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/30/2022 🔍
05/23/2025 +1089 days 🔍
05/23/2025 +0 days 🔍
12/09/2025 +200 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-367714
Status: Confirmed

CVE: CVE-2022-31807 (🔍)
GCVE (CVE): GCVE-0-2022-31807
GCVE (VulDB): GCVE-100-310183

Entryinfo

Created: 05/23/2025 17:49
Updated: 12/09/2025 21:17
Changes: 05/23/2025 17:49 (73), 08/23/2025 04:33 (10), 12/09/2025 21:17 (3)
Complete: 🔍
Cache ID: 216::103

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