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CVE-2026-20341NVD
Vulnerability Summary
A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software could allow an authenticated, remote attacker to obtain root privileges.
This vulnerability is due to unsecured deserialization of untrusted data over the sftunnel management connection. An attacker could exploit this vulnerability by sending crafted sftunnel remote procedure calls (RPCs). A successful exploit could allow the attacker to gain root privileges on a device that is running Cisco Secure FMC Software and its high-availability peer.
To exploit this vulnerability, the attacker must have valid administrative credentials on a managed Cisco FTD device.
This vulnerability is due to unsecured deserialization of untrusted data over the sftunnel management connection. An attacker could exploit this vulnerability by sending crafted sftunnel remote procedure calls (RPCs). A successful exploit could allow the attacker to gain root privileges on a device that is running Cisco Secure FMC Software and its high-availability peer.
To exploit this vulnerability, the attacker must have valid administrative credentials on a managed Cisco FTD device.
CVSS v3.1 Base Metrics — Score 9.1 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched Versions
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.0.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.1.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.2.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.0.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.4
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.5
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.3.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.3.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.3.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.4
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.6
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.4.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.5
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.3.1.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.6.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.5.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.6
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.1.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.6.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.7
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.5.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.3.1.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.8
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.8.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.6.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.2.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.9
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.7
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.7.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.2.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.10
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.2.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.8
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.7.10
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.10.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.8.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.2.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.10.2
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.7.10.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.2.4
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.3
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.7.11
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.4
- Cisco Cisco Secure Firewall Management Center (FMC) >= 10.0.0
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.4
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.5
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.0.9
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.2.11
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.7.12
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.6.5
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.6
- Cisco Cisco Secure Firewall Management Center (FMC) >= 10.0.1
- Cisco Cisco Secure Firewall Management Center (FMC) >= 7.4.7
Not provided by cveorg for this CVE.