CVE-2026-91953

Katalog CVE

CVSS 6.5 · Medium EPSS 0,46%

Kerentanan Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') pada freerdp. Skor CVSS 3.1 6.5 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-controlled content, causing denial of service or heap corruption before authentication completes.

Rincian

Terbit di NVD

15 September 2026

Terakhir diubah

24 September 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

EPSS (30 hari)

0,46% peluang dieksploitasi; lebih tinggi dari 37,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r9pv-ffph-6gg6 exploit · mitigasi · advisory vendor
• https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-buffer-overflow-via-lb-load-balance-info advisory pihak ketiga