CVE Watch7 de out. de 2026

CVE-2026-48558

SimpleHelp Authentication Bypass Vulnerability

CVSS

10.0

Crítica

EPSS

80.8%

p100

KEV

SIM

29 de jun. de 2026

Exploit Today

0-100

Publicado: 12 de jun. de 2026 · Última mod.: 7 de out. de 2026 · CWE-347

EPSS · 30d

5.7%EPSS · 30 dias80.8%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

SimpleHelp / SimpleHelp

Vulnerabilidade

SimpleHelp Authentication Bypass Vulnerability

Adicionado ao KEV

29 de jun. de 2026

Corrigir até

2 de jul. de 2026

Uso conhecido em ransomware

Não

Descrição resumida

SimpleHelp contains an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacker can submit a forged token containing arbitrary identity claims to obtain a fully authenticated technician session. In some configurations, this may also allow bypass of multi-factor authentication.

Ação necessária

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notas

https://simple-help.com/security/simplehelp-security-update-2026-05 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-48558

Descrição técnica

SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is configured, identity tokens submitted during login are accepted without verifying their cryptographic signature. In a vulnerable configuration, a remote, unauthenticated attacker can submit a forged token containing arbitrary identity claims to obtain a fully authenticated technician session. In some configurations, this may also allow bypass of multi-factor authentication. No user interaction is required.

Referências oficiais

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