CVE•Published 2026-03-13•Modified 2026-04-27•1 article on news•5 live references•NVD data
CVE-2026-25823
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
51
Exploit Prediction Scoring System · top 49% of all CVEs
Weaknesses (CWE)
Description
HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before 22.1s6, and Cosy+ with firmware 23.xx before 23.0s3 have a stack buffer overflow that leads to a Denial of Service, which can also be exploited to achieve Unauthenticated Remote Code Execution.
Timeline
Published 2026-03-13
Modified 2026-04-27
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.
More intel sources (5)
Shodan report
vuln:CVE-2026-25823Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-25823Censys host search filtered to this CVE id.
grep.app
CVE-2026-25823Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-25823GitHub code search for direct mentions.
Google dork
"CVE-2026-25823" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.