# knowns-dev vulnerabilities & exploitation

> As of 2026-10-05, Threadlinqs tracks 8 knowns-dev 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 8 knowns-dev CVEs published between 2026-09-15 and 2026-09-15. The busiest month was 2026-09 (8 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 8 of 8 tracked knowns-dev CVEs.

- [CVE-2026-86439](https://intel.threadlinqs.com/cve/CVE-2026-86439) — HIGH 8.8 · EPSS 0.8% · 2026-09-07
- [CVE-2026-86538](https://intel.threadlinqs.com/cve/CVE-2026-86538) — HIGH 7.5 · EPSS 0.7% · 2026-09-07
- [CVE-2026-86541](https://intel.threadlinqs.com/cve/CVE-2026-86541) — HIGH 8.3 · EPSS 0.5% · 2026-09-07
- [CVE-2026-86542](https://intel.threadlinqs.com/cve/CVE-2026-86542) — CRITICAL 9.1 · EPSS 0.5% · 2026-09-07
- [CVE-2026-86543](https://intel.threadlinqs.com/cve/CVE-2026-86543) — CRITICAL 9.8 · EPSS 0.4% · 2026-09-07
- [CVE-2026-86544](https://intel.threadlinqs.com/cve/CVE-2026-86544) — HIGH 8.1 · EPSS 0.3% · 2026-09-07
- [CVE-2026-86539](https://intel.threadlinqs.com/cve/CVE-2026-86539) — HIGH 7.2 · EPSS 0.2% · 2026-09-07
- [CVE-2026-86540](https://intel.threadlinqs.com/cve/CVE-2026-86540) — HIGH 7.8 · EPSS 0.1% · 2026-09-07

## Products affected

Threadlinqs normalises CPE and CNA product records across all 8 CVEs; 1 distinct knowns-dev product is affected. The most frequently affected:

- knowns — 8 CVEs

## Threat activity

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

## How to prioritise knowns-dev patching

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

- No knowns-dev CVE is in CISA KEV yet, so rank by exploit probability instead.
- Outside KEV, the highest EPSS scores are [CVE-2026-86439](https://intel.threadlinqs.com/cve/CVE-2026-86439) (0.8%), [CVE-2026-86538](https://intel.threadlinqs.com/cve/CVE-2026-86538) (0.7%), [CVE-2026-86541](https://intel.threadlinqs.com/cve/CVE-2026-86541) (0.5%).
- 2 CVEs score Critical and 6 High on CVSS v3 (maximum 9.8, average 8.3); sequence these after KEV and high-EPSS items.

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