CVE-2026-33371: synacor zimbra collaboration suite

csirt@kutim:~/threat-intel/cve/CVE-2026-33371

CVSS 4.3 · Medium EPSS 0,39%

Kerentanan Improper Restriction of XML External Entity Reference pada synacor zimbra collaboration suite. Skor CVSS 3.1 4.3 (Medium) menurut CISA ADP.

Deskripsi (NVD)

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. An XML External Entity (XXE) vulnerability exists in the Zimbra Exchange Web Services (EWS) SOAP interface due to improper handling of XML input. An authenticated attacker can submit crafted XML data that is processed by an XML parser with external entity resolution enabled. Successful exploitation may allow disclosure of sensitive local files from the server.

Rincian

Terbit di NVD: 20 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 4.3 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-611: Improper Restriction of XML External Entity Reference
EPSS (30 hari): 0,39% peluang dieksploitasi; lebih tinggi dari 31,7% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
synacor	zimbra collaboration suite	Versi 10.0.0 hingga sebelum 10.1.16

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://wiki.zimbra.com/wiki/Security_Center release notes · advisory vendor
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories advisory vendor
https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.16#Security_Fixes release notes
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy product

Sumber: NVD · CVE.org · 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.