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2026-10-17 21:56 CEST · Intelligence refreshed (Europe/Stockholm)

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Search software, operating systems, packages, CVEs, KBs, campaigns, advisories, named operations or GHSAs and review correlated vulnerability, campaign, advisory, exploitation, update, affected-product and lifecycle intelligence in one place.

Vendor and product names are suggested from the active PostgreSQL intelligence index as you type. Choose Campaign / advisory for named operations such as BADBOX, BADBOX 2.0, NotPetya or ransomware campaigns. Exact product excludes fuzzy identities; Vendor search discovers manufacturer-linked records. Auto detect still recognizes structured IDs such as CVEs, KBs, GHSAs and FLASH/CERT identifiers.
Latest synchronized CVE
CVSS 4.3 Published 2026-10-17 21:00 CEST
Vendor
Affected products
1 affected products/devices 1 software
General vulnerability query Recent High & critical CVEs

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CVSS 9.8/10 Critical severity

First published: 16 October 2026, 19:40 CEST · Last modified: 16 October 2026, 23:16 CEST

CVE lookup — correlated security and lifecycle intelligence

· 7 sources correlated

Critical severity — prioritize remediation

Netcore NR256CN through 1.5.140116 Pre-Auth Stack Overflow via Boa user_ok()

SeverityCVSS 9.8Critical · Remote / network
ExploitationNone reportedEPSS 0.5% chance in 30 days
Affected products4 products4 softwareEvidence7 sourcesindependent intelligence collections

Why this rating

  • It can be exploited remotely over the network.
  • Rated critical (CVSS 9.8); no exploitation is reported in current sources.

What to do

  1. Check your inventory against the 4 affected products — start with internet-facing systems.
Vendor
Affected products
,
,

Affected products (examples)

Click to open the full list
Netcore NR256CNNetcorecustomAll 4 →

What the vulnerability is

Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-auth usernames with unbounded strcpy() calls into 64-byte stack buffers. Unauthenticated attackers can send a username longer than 63 bytes to any protected /router/*.cgi route to crash the main Boa process or potentially execute code.

Detailed evidence Everything below supports the summary above. Open only what you need.

Matched intelligence coverage 7 sources
EUVD Vulnrichment GHSA EPSS CWE CVE Affected Products
Cross-source correlations 7 matched lanes

Direct intelligence-source relationships

Direct intelligence-source lanes: every lane below has direct evidence for

in that Scantide intelligence collection. Lanes share the CVE as their join key; their presence together does not imply that one source explicitly referenced another source's record.

7 matched source lanes
ENISA EUVD CISA Vulnrichment GitHub Advisory EPSS MITRE CWE CVE / NVD catalog Affected products/devices · 4
Downstream affected vendors 1 vendors

Affected vendor/product relationships

These vendors are derived from affected product/device evidence tied to this CVE. This is intentionally separate from the direct intelligence-source lanes above: a vendor can have affected products without Scantide having a vendor-specific advisory or Microsoft KB record for the CVE.

 1 affected vendors represented

Affected software, operating systems, hardware and devices 4

Deduplicated across Scantide's structured CVE, NVD applicability, CSAF, vendor advisory, campaign and downstream product evidence. Taxonomy IDs and evidence-only identifiers are excluded from the asset count. Counts represent relationships Scantide can currently prove, not the theoretical maximum downstream ecosystem.

4Software / applications
NVD/CVE catalog 1CISA Vulnrichment 4
Expand all affected categories (4) How can this affect my environment?
Software (4 — click to show all)
Vendor: Netcore
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: NVD/CVE catalogCorroborated: CISA Vulnrichmenthigh confidence
Vendor: Netcore
Software Affected range: through 1.5.140116 inclusive Product-associated Assertion
Primary: CISA Vulnrichment — structured affected recordhigh confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: CISA Vulnrichmentmedium-high confidence
Vendor: Not identified in correlated evidence
Software Affected range: All listed or unspecified versions Product-associated Assertion
Primary: CISA Vulnrichmentmedium-high confidence
What each source says 3
European vulnerability intelligence: ENISA EUVD cross-reference: EUVD-2026-103003.
Exploit probability: Estimated exploitation probability 0.49% — percentile 40.9%.
Vulnerability summary: Netcore NR256CN through 1.5.140116 Pre-Auth Stack Overflow via Boa user_ok()
GitHub package advisories 1
GHSA-5769-G37J-M8JQ
GitHub Advisory
GHSA-5769-G37J-M8JQ Published 2026-10-16T18:34:55Z Updated 2026-10-16T18:34:55Z

Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-auth usernames with unbounded strcpy() calls into 64-byte stack buffers. Unauthenticated attackers can send a username longer than 63 bytes to any protected /router/*.cgi route to crash the main Boa process or potentially execute code.

GHSA-5769-G37J-M8JQ
Read full advisory Open NVD recordOpen GitHub advisory or evidenceOpen source at www.vulncheck.com
Evidence coverage

Correlated from multiple vulnerability, exploitation, advisory, package and affected-product intelligence collections.

Technical query coverage · 15 collections queried · 1 CVEs correlated
2026-10-17 21:56 CESTIntelligence refreshed
1unique CVEs queried and enriched
1unique CVEs correlated to this result
1unique advisories correlated
15intelligence collections queried
Affected-product scope: The product/device count is the deduplicated set Scantide can prove from its currently ingested structured records and advisory text. It is not a claim that only those products were affected; component vulnerabilities such as Log4Shell can have a much larger downstream ecosystem. Advisory and vendor references are kept clickable so additional downstream exposure can be followed to the authoritative source.
Coverage note: Scantide correlates multiple public and locally indexed intelligence sources, but no dataset or matching process is complete. Results may omit software, dependencies, affected versions or advisories, and related records do not by themselves prove that a specific installation is vulnerable. Confirm important findings against vendor guidance and the installed product and version.