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Vulnerabilities found in Cisco Nexus 9000 Series, iOS XR Software, and Secure Email

🗓️ 03 Sep 2026 13:09:49Reported by NCSCType 
ncsc
 ncsc🔗 advisories.ncsc.nl👁 22 Views

Unauthenticated root command execution on Cisco Nexus 9000 via TCP 43210 or 43211 causing restart.

Related
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems, related to improper handling of exceptional states, allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems, related to deficiencies in access control, allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		Vulnerabilities of Cisco IOS XR operating systems, related to insufficient validation of message correctness or data structure, allow attackers to compromise the confidentiality, integrity, and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems, related to the compromised data protection mechanism, allows attackers to compromise the integrity and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems, related to the implementation of incorrect control flow, allows attackers to trigger service interruptions.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems, related to incorrect calculations, allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of Cisco IOS XR operating systems arises from inadequate control over resources throughout their entire lifecycle. This allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.
14 Sep 202600:00
–bdu_fstec
circl
Circl		CVE-2026-20212
2 Sep 202616:36
–circl
circl
Circl		CVE-2026-20274
2 Sep 202616:36
–circl
circl
Circl		CVE-2026-20275
2 Sep 202616:36
–circl
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03 Sep 2026 13:09Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.18.6 - 9.8
EPSS0.0073
SSVC
Cisco Nexus 9000IOS XRSecure EmailCommand ExecutionUnauthenticated AccessRoot PrivilegesDenial of Service
22