CVE-2026-42897: microsoft exchange server +1 lainnya

csirt@kutim:~/threat-intel/cve/CVE-2026-42897

CVSS 6.1 · Medium KEV · sudah dieksploitasi EPSS 0,52%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada microsoft exchange server, microsoft exchange server subscription edition. Skor CVSS 3.1 6.1 (Medium) menurut NVD. Masuk katalog KEV CISA pada 15 Mei 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Advisory KUTIM-CSIRT

Kerentanan XSS Microsoft Exchange Server CVE-2026-42897 Dieksploitasi Secara Aktif 15 Mei 2026

Rincian

Terbit di NVD: 14 Mei 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS (30 hari): 0,52% peluang dieksploitasi; lebih tinggi dari 42,5% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama: Microsoft Exchange Server Cross-Site Scripting Vulnerability
Masuk KEV: 15 Mei 2026
Tenggat CISA: 29 Mei 2026 (untuk instansi federal AS)
Ransomware: Belum tercatat
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

Vendor	Produk	Versi terdampak
microsoft	exchange server	Versi 2016
microsoft	exchange server	Versi 2016 cumulative_update_1
microsoft	exchange server	Versi 2016 cumulative_update_10
microsoft	exchange server	Versi 2016 cumulative_update_11
microsoft	exchange server	Versi 2016 cumulative_update_12
microsoft	exchange server	Versi 2016 cumulative_update_13
microsoft	exchange server	Versi 2016 cumulative_update_14
microsoft	exchange server	Versi 2016 cumulative_update_15
microsoft	exchange server	Versi 2016 cumulative_update_16
microsoft	exchange server	Versi 2016 cumulative_update_17
microsoft	exchange server	Versi 2016 cumulative_update_18
microsoft	exchange server	Versi 2016 cumulative_update_19
microsoft	exchange server	Versi 2016 cumulative_update_2
microsoft	exchange server	Versi 2016 cumulative_update_20
microsoft	exchange server	Versi 2016 cumulative_update_21
microsoft	exchange server	Versi 2016 cumulative_update_22
microsoft	exchange server	Versi 2016 cumulative_update_23
microsoft	exchange server	Versi 2016 cumulative_update_3
microsoft	exchange server	Versi 2016 cumulative_update_4
microsoft	exchange server	Versi 2016 cumulative_update_5
microsoft	exchange server	Versi 2016 cumulative_update_6
microsoft	exchange server	Versi 2016 cumulative_update_7
microsoft	exchange server	Versi 2016 cumulative_update_8
microsoft	exchange server	Versi 2016 cumulative_update_9
microsoft	exchange server	Versi 2019
microsoft	exchange server	Versi 2019 cumulative_update_1
microsoft	exchange server	Versi 2019 cumulative_update_10
microsoft	exchange server	Versi 2019 cumulative_update_11
microsoft	exchange server	Versi 2019 cumulative_update_12
microsoft	exchange server	Versi 2019 cumulative_update_13
microsoft	exchange server	Versi 2019 cumulative_update_14
microsoft	exchange server	Versi 2019 cumulative_update_2
microsoft	exchange server	Versi 2019 cumulative_update_3
microsoft	exchange server	Versi 2019 cumulative_update_4
microsoft	exchange server	Versi 2019 cumulative_update_5
microsoft	exchange server	Versi 2019 cumulative_update_6
microsoft	exchange server	Versi 2019 cumulative_update_7
microsoft	exchange server	Versi 2019 cumulative_update_8
microsoft	exchange server	Versi 2019 cumulative_update_9
microsoft	exchange server subscription edition	Semua versi sebelum 15.02.2562.043

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897 mitigasi · advisory vendor
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42897 pemerintah AS

Sumber: NVD · CVE.org · KEV CISA · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.