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Cisco

Vendor security scorecard – 151 CVEs in the selected period

Period: 30d 90d 6m 1y All
Risk 711
151
CVEs
12
Critical
36
High
7
KEV
9
PoC
48
Unpatched C/H
0.7%
Patch Rate
0.1%
Avg EPSS

Severity Breakdown

CRITICAL
12
HIGH
36
MEDIUM
103
LOW
0

Monthly CVE Trend

Top Risky CVEs

CVE Summary Severity CVSS EPSS Priority Signals
CVE-2026-20131 Cisco Secure Firewall Management Center (FMC) contains a critical unauthenticated Java deserialization vulnerability (CVE-2026-20131, CVSS 10.0) in its web interface that enables remote code execution as root. KEV-listed with public PoC, this vulnerability allows complete compromise of the central management platform that controls all Cisco firewalls in the organization, enabling attackers to modify security policies, disable protections, and access all network traffic. CRITICAL 10.0 0.6% 141
KEV PoC No patch
CVE-2026-20182 Remote unauthenticated attackers can bypass peering authentication in Cisco Catalyst SD-WAN Controller (vSmart) and SD-WAN Manager (vManage) to obtain administrative privileges and manipulate network configurations across the entire SD-WAN fabric. This critical authentication bypass (CVSS 10.0) allows direct NETCONF access as a high-privileged internal user without any credentials. Cisco released fixes in May 2026 following discovery of this second authentication flaw after a February 2026 disclosure of a related vulnerability. No active exploitation confirmed in CISA KEV at time of analysis, though the maximum CVSS score and authentication bypass nature make this a priority patching target for SD-WAN deployments. CRITICAL 10.0 1.6% 127
KEV PoC No patch
CVE-2026-20127 Cisco Catalyst SD-WAN Controller and Manager contain a critical authentication bypass (CVE-2026-20127, CVSS 10.0) in the peering authentication mechanism that allows unauthenticated remote attackers to obtain full administrative privileges. The vulnerability exists because peering authentication does not properly validate credentials, enabling any attacker with network access to take over the SD-WAN management plane and control the entire WAN fabric. CRITICAL 10.0 2.6% 113
KEV PoC No patch
CVE-2026-20128 Privilege escalation in Cisco Catalyst SD-WAN Manager (versions prior to 20.18) enables authenticated local attackers with valid vmanage credentials to obtain Data Collection Agent (DCA) user privileges by reading an unprotected credential file from the filesystem. Confirmed actively exploited (CISA KEV) with publicly available exploit code despite low EPSS score (0.02%), indicating targeted attacks rather than widespread scanning. High-privileged initial access requirement (PR:H) and high attack complexity (AC:H) limit exploitability, but scope change (S:C) enables lateral movement to other SD-WAN systems. HIGH 7.5 0.0% 108
KEV PoC No patch
CVE-2026-20133 Insufficient filesystem access controls in Cisco Catalyst SD-WAN Manager expose sensitive operating system information to authenticated remote attackers through API access. An attacker with valid credentials can exploit this vulnerability to read confidential data from the underlying system without requiring user interaction. No patch is currently available for this medium-severity information disclosure vulnerability. MEDIUM 6.5 0.0% 103
KEV PoC No patch
CVE-2026-20122 Catalyst Sd-Wan Manager contains a vulnerability that allows attackers to overwrite arbitrary files on the affected system and gain vmanage user priv (CVSS 5.4). MEDIUM 5.4 0.0% 97
KEV PoC No patch
CVE-2026-20045 Cisco Unified Communications Manager and related products contain a code injection vulnerability (CVE-2026-20045) that allows unauthenticated remote attackers to execute arbitrary code. This KEV-listed vulnerability affects the core enterprise voice/video infrastructure including Unified CM, IM&P, Unity Connection, and Webex Calling Dedicated Instance, making it a high-priority threat for organizations dependent on Cisco collaboration tools. HIGH 8.2 1.0% 92
KEV No patch
CVE-2026-20079 Unauthenticated auth bypass in Cisco FMC web interface. CVSS 10.0. CRITICAL 10.0 0.2% 90
PoC No patch
CVE-2026-20223 Authentication bypass in Cisco Secure Workload allows unauthenticated remote attackers to invoke internal REST API endpoints and act with Site Admin privileges across tenant boundaries. The flaw carries a maximum CVSS 10.0 score with a changed scope and full CIA impact, and no public exploit has been identified at time of analysis. Successful exploitation enables reading sensitive tenant data and modifying configuration globally, making this a critical-priority issue for any organization running affected versions. CRITICAL 10.0 0.0% 50
No patch
CVE-2026-20147 A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating CRITICAL 9.9 0.2% 50
No patch
CVE-2026-20186 A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying CRITICAL 9.9 0.2% 50
No patch
CVE-2026-20180 A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying CRITICAL 9.9 0.2% 50
No patch
CVE-2026-20160 Remote code execution in Cisco Smart Software Manager On-Prem allows unauthenticated attackers to execute arbitrary commands with root privileges via an exposed internal service API. The vulnerability stems from unintentional exposure of an internal service that accepts crafted API requests, enabling full system compromise. With a CVSS score of 9.8 and complete attack vector accessibility over the network requiring no authentication or user interaction, this represents a critical security exposure for organizations using SSM On-Prem for Cisco software license management, though no public exploit identified at time of analysis. CRITICAL 9.8 0.2% 49
No patch
CVE-2026-20129 Authentication bypass in Cisco Catalyst SD-WAN Manager API allows unauthenticated remote access to the management platform. Separate vulnerability from the peering auth bypass (CVE-2026-20127). CRITICAL 9.8 0.1% 49
No patch
CVE-2026-20184 A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote atta CRITICAL 9.8 0.1% 49
No patch

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