CVE-2026-22858

freerdp

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2026-22858

Katalog CVE

CVSS 9.1 · Critical EPSS 0,70%

Kerentanan Out-of-bounds Read pada freerdp. Skor CVSS 3.1 9.1 (Critical) menurut NVD.

Deskripsi (NVD)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c <= 0 can be optimized into a simple c != 0 check. As a result, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, causing out-of-bounds access. This vulnerability is fixed in 3.20.1.

Rincian

Terbit di NVD
14 Januari 2026
Terakhir diubah
15 Juli 2026
Status NVD
Modified
CVSS 3.1
9.1 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-125: Out-of-bounds Read
CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
CWE-787: Out-of-bounds Write
EPSS (30 hari)
0,70% peluang dieksploitasi; lebih tinggi dari 52,0% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
freerdp freerdp Semua versi sebelum 3.20.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

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.