CVE-2026-35098
Improper Restriction of Excessive Authentication Attempts in KTM System e-BOK
Description
KTM System e-BOK does not implement any limit or timeout on consecutive login attempts, allowing an attacker to perform unlimited authentication requests. This lack of rate‑limiting enables efficient brute‑force attacks against user accounts. When combined with vulnerability CVE-2026-35097, where passwords are restricted to a six‑digit numeric format, this becomes a critical issue, as such passwords can be brute‑forced in a relatively short time. This issue was fixed in the patch published in June 2026.
INFO
Published Date :
June 30, 2026, 2:16 p.m.
Last Modified :
Oct. 25, 2026, 9:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-35098
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 4bb8329e-dd38-46c1-aafb-9bf32bcb93c6 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Enforce login attempt rate limits.
- Configure account lockout policies.
- Apply security patches promptly.
- Use strong password policies.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-35098.
| URL | Resource |
|---|---|
| https://cert.pl/posts/2026/06/CVE-2026-35095/ | |
| https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35098 is
associated with the following CWEs:
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-2026-35098
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-35098 vulnerability anywhere in the article.
-
cert.pl
Vulnerabilities in KTM System e-BOK software
Vulnerabilities in KTM System e-BOK software CVE ID CVE-2026-35095 Publication date 30 June 2026 Vendor KTM System Product e-BOK Vulnerable versions All before 06.2026 Vulnerability type (CWE) Session ... Read more
The following table lists the changes that have been made to the
CVE-2026-35098 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: e-BOK de KTM System, Description: KTM System e-BOK no implementa ningún límite o tiempo de espera en los intentos de inicio de sesión consecutivos, permitiendo a un atacante realizar solicitudes de autenticación ilimitadas. Esta falta de limitación de velocidad permite ataques de fuerza bruta eficientes contra las cuentas de usuario. Cuando se combina con la vulnerabilidad CVE-2026-35097, donde las contraseñas están restringidas a un formato numérico de seis dígitos, esto se convierte en un problema crítico, ya que dichas contraseñas pueden ser forzadas por fuerza bruta en un tiempo relativamente corto. Este problema fue solucionado en el parche publicado en junio de 2026. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 30, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-35098', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-30T14:40:46.505812Z'} -
New CVE Received by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'KTM System', 'modules': ['e-BOK'], 'product': 'e-BOK', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '06.2026', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] Added Description KTM System e-BOK does not implement any limit or timeout on consecutive login attempts, allowing an attacker to perform unlimited authentication requests. This lack of rate‑limiting enables efficient brute‑force attacks against user accounts. When combined with vulnerability CVE-2026-35097, where passwords are restricted to a six‑digit numeric format, this becomes a critical issue, as such passwords can be brute‑forced in a relatively short time. This issue was fixed in the patch published in June 2026. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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 Added CWE CWE-307 Added Reference https://cert.pl/posts/2026/06/CVE-2026-35095/ Added Reference https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/