# siyuan-note vulnerabilities & exploitation

> As of 2026-10-05, Threadlinqs tracks 12 siyuan-note CVEs, 0 in the CISA Known Exploited Vulnerabilities catalog, linked to 0 tracked threat campaigns.

**Data as of:** 2026-10-05

## Exploitation timeline

Threadlinqs has recorded 12 siyuan-note CVEs published between 2026-07-15 and 2026-08-15. The busiest month was 2026-08 (11 new CVEs). None of them is listed in CISA KEV yet.

## Most exploited vulnerabilities

Ranked with CISA KEV listings first, then EPSS exploit probability, then CVSS score. Showing 12 of 12 tracked siyuan-note CVEs.

- [CVE-2026-66012](https://intel.threadlinqs.com/cve/CVE-2026-66012) — CRITICAL 10 · EPSS 0.4% · 2026-07-25
- [CVE-2026-73046](https://intel.threadlinqs.com/cve/CVE-2026-73046) — CRITICAL 9.8 · EPSS 0.4% · 2026-08-15
- [CVE-2026-73043](https://intel.threadlinqs.com/cve/CVE-2026-73043) — CRITICAL 9 · EPSS 0.4% · 2026-08-15
- [CVE-2026-73054](https://intel.threadlinqs.com/cve/CVE-2026-73054) — HIGH 7.5 · EPSS 0.3% · 2026-08-15
- [CVE-2026-73045](https://intel.threadlinqs.com/cve/CVE-2026-73045) — HIGH 7.5 · EPSS 0.3% · 2026-08-15
- [CVE-2026-73042](https://intel.threadlinqs.com/cve/CVE-2026-73042) — CRITICAL 9 · EPSS 0.3% · 2026-08-15
- [CVE-2026-73052](https://intel.threadlinqs.com/cve/CVE-2026-73052) — CRITICAL 9 · EPSS 0.3% · 2026-08-15
- [CVE-2026-73053](https://intel.threadlinqs.com/cve/CVE-2026-73053) — CRITICAL 9 · EPSS 0.3% · 2026-08-15
- [CVE-2026-73044](https://intel.threadlinqs.com/cve/CVE-2026-73044) — CRITICAL 9 · EPSS 0.2% · 2026-08-15
- [CVE-2026-73050](https://intel.threadlinqs.com/cve/CVE-2026-73050) — CRITICAL 9 · EPSS 0.2% · 2026-08-15
- [CVE-2026-73041](https://intel.threadlinqs.com/cve/CVE-2026-73041) — CRITICAL 9 · EPSS 0.2% · 2026-08-15
- [CVE-2026-73047](https://intel.threadlinqs.com/cve/CVE-2026-73047) — MEDIUM 6.2 · EPSS 0.1% · 2026-08-15

## Products affected

Threadlinqs normalises CPE and CNA product records across all 12 CVEs; 1 distinct siyuan-note product is affected. The most frequently affected:

- siyuan — 12 CVEs

## Threat activity

No tracked threat campaign references siyuan-note products or CVEs yet. Vulnerability records are still monitored for exploitation and linked as campaigns are ingested.

## How to prioritise siyuan-note patching

This order follows the data Threadlinqs holds for siyuan-note, not a generic severity checklist:

- No siyuan-note CVE is in CISA KEV yet, so rank by exploit probability instead.
- Outside KEV, the highest EPSS scores are [CVE-2026-66012](https://intel.threadlinqs.com/cve/CVE-2026-66012) (0.4%), [CVE-2026-73046](https://intel.threadlinqs.com/cve/CVE-2026-73046) (0.4%), [CVE-2026-73043](https://intel.threadlinqs.com/cve/CVE-2026-73043) (0.4%).
- 9 CVEs score Critical and 2 High on CVSS v3 (maximum 10, average 8.7); sequence these after KEV and high-EPSS items.
- 1 CVE has a public exploit or proof of concept recorded, which shortens the time from disclosure to attack.

## About this data

Vendor attribution comes from the CNA and CPE product records of each CVE, folded to one vendor name; CVSS, EPSS and KEV status are read from the Threadlinqs CVE catalog; campaign and actor links come from tracked threat records. Counts reflect the data as of 2026-10-05 and refresh daily.

Canonical: https://intel.threadlinqs.com/vendors/siyuan-note
All vendors: https://intel.threadlinqs.com/vendors
Full detection coverage and IOCs via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp