CVE-2023-21529

Katalog CVE

CVSS 8.8 · High KEV · sudah dieksploitasi Dipakai ransomware EPSS 59,3%

Kerentanan Deserialization of Untrusted Data pada microsoft exchange server. Skor CVSS 3.1 8.8 (High) menurut microsoft.com. Masuk katalog KEV CISA pada 13 April 2026, artinya sudah terbukti dieksploitasi. Tercatat dipakai dalam kampanye ransomware.

Deskripsi (NVD)

Microsoft Exchange Server Remote Code Execution Vulnerability

Rincian

Terbit di NVD

14 Februari 2023

Terakhir diubah

19 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

8.8 (High), sumber microsoft.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

59,3% peluang dieksploitasi; lebih tinggi dari 99,1% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability

Masuk KEV

13 April 2026

Tenggat CISA

27 April 2026 (untuk instansi federal AS)

Ransomware

Tercatat dipakai dalam kampanye ransomware

Tindakan wajib

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21529 patch · advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21529 pemerintah AS
• https://www.microsoft.com/en-us/security/blog/2026/04/06/storm-1175-focuses-gaze-on-vulnerable-web-facing-asse... deskripsi teknis