CVE-2019-1736— Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability
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I. Basic Information for CVE-2019-1736
Vulnerability Information
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Vulnerability Title
Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco UCS C-Series Rack Servers 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco UCS C-Series是美国思科（Cisco）公司的一款C系列机架式服务器。 Cisco UCS C-Series Rack Servers中的固件存在数据伪造漏洞，该漏洞源于程序无法正确验证服务器固件更新镜像。攻击者可利用该漏洞利用该漏洞绕过签名验证检查并加载未被Cisco签名的软件镜像。以下产品及版本受到影响：Firepower Management Center (FMC) 1000；Firepower Management Center (FMC) 2500；Firepower Ma
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software | n/a | - |
II. Public POCs for CVE-2019-1736
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypassvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1736
Same Patch Batch · Cisco · 2020-09-23 · 34 CVEs total
| CVE-2020-3569 | 8.6 HIGH | Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities |
| CVE-2019-16021 | Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities | |
| CVE-2019-16019 | Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities | |
| CVE-2019-16023 | Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities | |
| CVE-2019-16025 | Cisco Emergency Responder Stored Cross-Site Scripting Vulnerability | |
| CVE-2019-16028 | Cisco Firepower Management Center Lightweight Directory Access Protocol Authentication Byp | |
| CVE-2019-1888 | Cisco Unified Contact Center Express Privilege Escalation Vulnerability | |
| CVE-2019-1947 | Cisco Email Security Appliance Denial of Service Vulnerability | |
| CVE-2019-1983 | Cisco Email Security Appliance and Cisco Content Security Management Appliance Denial of S | |
| CVE-2020-3116 | Cisco Webex Centers Denial of Service Vulnerability | |
| CVE-2020-3117 | Cisco Web Security Appliance and Cisco Content Security Management Appliance HTTP Header I | |
| CVE-2020-3124 | Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability | |
| CVE-2020-3130 | Cisco Unity Connection Directory Traversal Vulnerability | |
| CVE-2020-3133 | Cisco Email Security Appliance Content Filter Bypass Vulnerability | |
| CVE-2020-3135 | Cisco Unified Communications Manager Cross-Site Request Forgery Vulnerability | |
| CVE-2020-3137 | Cisco Email Security Appliance Cross-Site Scripting Vulnerability | |
| CVE-2020-3143 | Cisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS Software Path Tr | |
| CVE-2019-15283 | Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulne | |
| CVE-2019-16017 | Cisco Unified Customer Voice Portal Insecure Direct Object Reference Vulnerability | |
| CVE-2019-16009 | Cisco IOS and Cisco IOS XE Software Web UI Cross-Site Request Forgery Vulnerability |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco Identity Services Engine Software
- CVE-2026-20193
Cisco Identity Services Engine Authentication Bypass Vulnera - CVE-2026-20195
Cisco Identity Services Engine Observable Response Discrepan - CVE-2026-20136
Cisco Identity Services Engine Authenticated Privilege Escal - CVE-2026-20180
Cisco Identity Services Engine Multiple Remote Code Executio - CVE-2026-20186
Cisco Identity Services Engine Multiple Authenticated Remote
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-347
- CVE-2026-42193
Plunk: SNS webhook forgery - CVE-2026-44497
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type - CVE-2026-41669
Admidio: SAML Signature Validation Result Ignored — Forged A - CVE-2026-7689
Dolibarr ERP CRM Online Signature security.lib.php dol_verif - CVE-2026-33467
Improper Verification of Cryptographic Signature in Elastic
V. Comments for CVE-2019-1736
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