CVE•Published 2026-07-06•Modified 2026-07-08•1 article on news•4 live references•NVD data
CVE-2026-5268
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
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Weaknesses (CWE)
Description
An authentication bypass vulnerability exists in the default SFTP server component utilized across the Ciena products listed. This vulnerability allows a remote, unauthenticated attacker to bypass security controls and gain unauthorized access to the underlying filesystem. Successful exploitation could allow an attacker to read or modify system files.
Timeline
Published 2026-07-06
Modified 2026-07-08
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-5268Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-5268Censys host search filtered to this CVE id.
grep.app
CVE-2026-5268Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-5268GitHub code search for direct mentions.
Google dork
"CVE-2026-5268" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.