CVE-2026-63090

Katalog CVE

CVSS 8.8 · High EPSS 0,93%

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

Deskripsi (NVD)

ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the mod_sftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component. Attackers can supply oversized fragments to trigger an incorrectly conditioned reallocation, corrupt pool freelist metadata, overwrite the root_fs BSS global pointer to reference a fake filesystem struct, and redirect pr_fsio_stat() to system() via a crafted RENAME request.

Rincian

Terbit di NVD

20 Juli 2026

Terakhir diubah

30 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow

EPSS (30 hari)

0,93% peluang dieksploitasi; lebih tinggi dari 59,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/proftpd/proftpd/commit/4ee8701bcf425f11b3b2116e634ff3e655d918b1 patch
• https://www.vulncheck.com/advisories/proftpd-mod-sftp-heap-buffer-overflow-via-sftp-packet-reassembly advisory pihak ketiga · patch · release notes
• https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES release notes
• https://github.com/proftpd/proftpd/issues/2190 issue tracking
• https://github.com/proftpd/proftpd/releases/tag/v1.3.10rc3-3 product · release notes
• https://github.com/proftpd/proftpd/releases/tag/v1.3.9c product · release notes