CVE-2026-102073

Vulnerability in Siemens APOGEE MBC (PPC) (BACnet)

CVSS score

8.2

EPSS probability

—

Risk score

0.8

Published

4 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Web Service Vulnerability in Siemens APOGEE and TALON Products

Sources read

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

A vulnerability has been identified in Siemens APOGEE and TALON products where the web service fails to properly validate the length of user-controllable input. An unauthenticated remote attacker can read portions of device memory or cause a denial-of-service condition.

Why does it matter?

This vulnerability is critical because it can be remotely exploited without authentication, allowing unauthorized memory reads and service disruptions.

What should be done?

Follow the vendor advisory.
Check official announcements for product updates.

Chain of evidence and sources2 verified claims

Siemens APOGEE ve TALON ürünlerindeki web servisi girdilerin uzunluğunu doğru doğrulamamaktadır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Kimliği doğrulanmamış uzaktan bir saldırgan cihaz belleğini okuyabilir veya hizmet dışı bırakma yaratabilir.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Show the technical text from the sources

A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.7), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.21), APOGEE PXC Modular (BACnet) (All versions < V3.5.7), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.21), TALON TC Compact (BACnet) (All versions < V3.5.7), TALON TC Modular (BACnet) (All versions < V3.5.7). The affected product web service does not properly validate the length of user-controllable input. This could allow an unauthenticated remote attacker to read portions of device memory or to cause a denial-of-service condition.

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

CWE: CWE-191

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-102073 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	siemens	APOGEE MBC (PPC) (BACnet)	View
2	siemens	APOGEE MBC (PPC) (P2 Ethernet)	View
3	siemens	APOGEE MEC (PPC) (BACnet)	View
4	siemens	APOGEE MEC (PPC) (P2 Ethernet)	View
5	siemens	APOGEE PXC Compact (BACnet)	View
6	siemens	APOGEE PXC Compact (P2 Ethernet)	View
7	siemens	APOGEE PXC Modular (BACnet)	View
8	siemens	APOGEE PXC Modular (P2 Ethernet)	View
9	siemens	TALON TC Compact (BACnet)	View
10	siemens	TALON TC Modular (BACnet)	View

Total affected vendors: 1|Products: 10

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
8.8	CVSS V40	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD
8.8	CVSS V4_0	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N	CVE CNA
8.2	CVSS V31	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L	NVD
8.2	CVSS V3_1	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-102073 is associated with the following CWEs:

CWE-191: Common Weakness Enumeration Entry CWE-191

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-102073 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

https://cert-portal.siemens.com/productcert/html/ssa-333035.htmlvendor-advisory

CVSS Vector Radar Chart

8.2 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

siemens

Weakness Type (CWE & CAPEC)

CWE-191

Similar Vulnerabilities

10.0

CVE-2021-44228 Actively exploited

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