CVE-2026-44421

Katalog CVE

CVSS 8.8 · High EPSS 0,72%

Kerentanan Heap-based Buffer Overflow pada freerdp. Skor CVSS 3.1 8.8 (High) menurut github.com.

Deskripsi (NVD)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it validates a destination rectangle that is clamped to UINT16_MAX, but then performs the copy using the original cacheEntry->width/height. This can cause a large out-of-bounds heap write and may lead to client crashes or code execution. This bug is reachable from a malicious RDP server, but only when the client has RDPGFX enabled. This vulnerability is fixed in 3.26.0.

Rincian

Terbit di NVD

29 Mei 2026

Terakhir diubah

27 Juli 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow
CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,72% peluang dieksploitasi; lebih tinggi dari 52,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-p6r2-4hgm-m6ff exploit · mitigasi · advisory vendor
• https://access.redhat.com/errata/RHSA-2026:36203
• https://access.redhat.com/errata/RHSA-2026:46393
• https://access.redhat.com/security/cve/CVE-2026-44421
• https://bugzilla.redhat.com/show_bug.cgi?id=2483471
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44421.json