CVE-2026-40170
7.5
HIGH
CVSS 3.1
EPSS 0.02%
描述
ngtcp2 is a C implementation of the IETF QUIC protocol. In versions prior to 1.22.1, ngtcp2_qlog_parameters_set_transport_params() serializes peer transport parameters into a fixed 1024-byte stack buffer without bounds checking. When qlog is enabled, a remote peer can send sufficiently large transport parameters during the QUIC handshake to cause writes beyond the buffer boundary, resulting in a stack buffer overflow. This affects deployments that enable the qlog callback and process untrusted peer transport parameters. This issue has been fixed in version 1.22.1. If developers are unable to immediately upgrade, they can disable the qlog on client.
如何修補 CVE-2026-40170
要修補 CVE-2026-40170,請將受影響套件升級到下列已修補版本。
- —升級至 1.5.0-r1 或更新版本
- —升級至 0.12.1+dfsg-1+deb12u1 或更新版本
CVE-2026-40170 正在被利用嗎?
低 — EPSS 為 0.0%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1.5.0-r1
- from 0, < 0.12.1+dfsg-1+deb12u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |