VDB-349973 · CVE-2026-27661 · ssa-430425

Siemens SINEC Security Monitor up to 4.8.x exposure of sensitive information through metadata

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Siemens SINEC Security Monitor up to 4.8.x. This affects an unknown function. The manipulation leads to exposure of sensitive information through metadata. This vulnerability is listed as CVE-2026-27661. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens SINEC Security Monitor up to 4.8.x. It has been rated as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a exposure of sensitive information through metadata vulnerability. Using CWE to declare the problem leads to CWE-1230. The product prevents direct access to a resource containing sensitive information, but it does not sufficiently limit access to metadata that is derived from the original, sensitive information. Impacted is confidentiality. The summary by CVE is:

A vulnerability has been identified in SINEC Security Monitor (All versions < V4.9.0). The affected application leaks confidential information in metadata, and files such as information on contributors and email address, on `SSM Server`.

The advisory is shared at cert-portal.siemens.com. The identification of this vulnerability is CVE-2026-27661 since 02/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/15/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 4.9.0 eliminates this vulnerability.

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Productinfo

Vendor

Siemens

Name

SINEC Security Monitor

Version

License

commercial

Website

Vendor: https://www.siemens.com/

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: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (siemens): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Exposure of sensitive information through metadata
CWE: CWE-1230 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SINEC Security Monitor 4.9.0

Timelineinfo

02/23/2026 CVE reserved
03/10/2026 +15 days Advisory disclosed
03/10/2026 +0 days VulDB entry created
03/15/2026 +5 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-430425
Status: Confirmed

CVE: CVE-2026-27661 (🔒)
GCVE (CVE): GCVE-0-2026-27661
GCVE (VulDB): GCVE-100-349973

Entryinfo

Created: 03/10/2026 17:38
Updated: 03/15/2026 21:11
Changes: 03/10/2026 17:38 (75), 03/15/2026 21:11 (1)
Complete: 🔍
Cache ID: 216::103