CVE-2026-6420— Keylime: keylime: security bypass due to hardcoded tpm quote nonce
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-6420
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Keylime: keylime: security bypass due to hardcoded tpm quote nonce
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module (TPM) quote attestation instead of a cryptographically random value. This allows the attacker to stockpile valid TPM quotes and replay them to evade detection after compromising the system. This issue affects only the push model deployment.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1241
Source: NVD (National Vulnerability Database)
Vulnerability Title
Keylime 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keylime是Keylime开源的一个利用 TPM 技术的开源可扩展信任系统。 Keylime存在安全漏洞，该漏洞源于验证器使用硬编码的挑战随机数进行TPM引用证明而非加密随机值，可能导致攻击者囤积有效TPM引用并重放以逃避检测。
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 |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 |
II. Public POCs for CVE-2026-6420
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-6420
请登录查看更多情报信息。
- 2458889 – (CVE-2026-6420) CVE-2026-6420 keylime: Keylime: Security bypass due to hardcoded TPM quote nonceissue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-6420
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de - CVE-2026-34000
Xwayland: xorg: x.org x server: information disclosure and d - CVE-2026-2708
Libsoup: libsoup: http request smuggling via duplicate conte
Same vendor: Red Hat
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-34956
Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
Xorg: xwayland: x.org x server: information disclosure or de - CVE-2026-34000
Xwayland: xorg: x.org x server: information disclosure and d
Same weakness: CWE-1241
- CVE-2025-13079
Popup Builder - Create highly converting, mobile friendly ma - CVE-2025-32056
Anti-Theft Bypass for Infotainment ECU - CVE-2023-4695
Use of Predictable Algorithm in Random Number Generator in p - CVE-2021-3692
Use of Predictable Algorithm in Random Number Generator in y - CVE-2021-3689
Use of Predictable Algorithm in Random Number Generator in y
V. Comments for CVE-2026-6420
No comments yet