CVE-2026-49841

Katalog CVE

CVSS 9.8 · Critical EPSS 0,61%

Kerentanan Heap-based Buffer Overflow pada freeswitch. Skor CVSS 3.1 9.8 (Critical) menurut github.com.

Deskripsi (NVD)

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, the mod_verto HTTP request handler allocates a fixed 2 MiB buffer for a POST application/x-www-form-urlencoded body but accepts Content-Length up to just under 10 MiB. The body-read loop is bounded by Content-Length rather than the buffer size, producing an attacker-controlled heap overflow of up to ~8 MiB -- before the HTTP basic-auth check runs. This issue has been patched in version 1.11.1.

Rincian

Terbit di NVD

9 Juni 2026

Terakhir diubah

23 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow
CWE-131: Incorrect Calculation of Buffer Size

EPSS (30 hari)

0,61% peluang dieksploitasi; lebih tinggi dari 47,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/signalwire/freeswitch/security/advisories/GHSA-wfrq-qvg2-f88f advisory pihak ketiga
• https://github.com/signalwire/freeswitch/releases/tag/v1.11.1 release notes