CVE-2026-48558

Katalog CVE

CVSS 10.0 · Critical KEV · sudah dieksploitasi EPSS 5,7%

Kerentanan Improper Verification of Cryptographic Signature pada simple-help simplehelp. Skor CVSS 3.1 10.0 (Critical) menurut vulncheck.com. Masuk katalog KEV CISA pada 29 Juni 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

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.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: Kerentanan Kritis CVE-2026-48558 pada SimpleHelp yang Dieksploitasi Secara Aktif 30 Jun 2026

Rincian

Terbit di NVD

12 Juni 2026

Terakhir diubah

7 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

10.0 (Critical), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

5,7% peluang dieksploitasi; lebih tinggi dari 92,8% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

SimpleHelp Authentication Bypass Vulnerability

Masuk KEV

29 Juni 2026

Tenggat CISA

2 Juli 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

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.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://simple-help.com/security/simplehelp-security-update-2026-05 patch · advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48558 pemerintah AS
• https://horizon3.ai/attack-research/disclosures/cve-2026-48558-simplehelp-authentication-bypass-iocs/ advisory pihak ketiga
• https://blackpointcyber.com/blog/a-djinn-in-the-machine-taskweavers-node-js-intrusion-chain/ deskripsi teknis · advisory pihak ketiga
• https://simple-help.com/release-news release notes