CVE-2026-73863

Katalog CVE

CVSS 7.0 · High EPSS 0,35%

Kerentanan Out-of-bounds Read. Skor CVSS 4.0 7.0 (High) menurut github.com.

Deskripsi (NVD)

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's broker-side MQTT v5 nmq_subinfo_decode() function in nng/src/sp/protocol/mqtt/mqtt_parser.c reuses len_of_varint from the outer Properties Length while parsing each SUBSCRIPTION_IDENTIFIER. A remote client can send a SUBSCRIBE packet with a multi-byte Properties Length and repeated subscription identifiers, causing get_var_integer() to begin at an incorrect offset and read beyond the heap message buffer. The flaw is reachable through the broker receive path and can crash the broker, while the separately reported topic-option off-by-one occurs later and is not this vulnerability. This issue is fixed in version 0.24.14.

Rincian

Terbit di NVD

18 September 2026

Terakhir diubah

24 September 2026

Status NVD

Deferred

CVSS 4.0

7.0 (High), sumber github.com
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 27,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/nanomq/NanoNNG/commit/f888fe39d6691b253ff9aee598ce58bbe449ab6f
• https://github.com/nanomq/NanoNNG/pull/1518
• https://github.com/nanomq/nanomq/releases/tag/0.24.14
• https://github.com/nanomq/nanomq/security/advisories/GHSA-pf97-vm7h-q84m