CVE-2020-26541
MEDIUMCVSS 6.5/10EPSS 0.52%
Last modified
CVE-2020-26541 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.8.13 |
References
- https://lkml.org/lkml/2020/9/15/1871Exploit, Vendor Advisory
- https://lkml.org/lkml/2020/9/15/1871Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-26541?
The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.
How severe is CVE-2020-26541?
CVE-2020-26541 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2020-26541?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-26536An issue was discovered in Foxit Reader and PhantomPDF befor…5.5
- CVE-2020-26537An issue was discovered in Foxit Reader and PhantomPDF befor…9.8
- CVE-2020-26538An issue was discovered in Foxit Reader and PhantomPDF befor…7.8
- CVE-2020-26539An issue was discovered in Foxit Reader and PhantomPDF befor…9.8
- CVE-2020-2654Vulnerability in the Java SE product of Oracle Java SE (comp…3.7
- CVE-2020-26540An issue was discovered in Foxit Reader and PhantomPDF befor…7.5
- CVE-2020-26542An issue was discovered in the MongoDB Simple LDAP plugin th…9.8
- CVE-2020-26546An issue was discovered in HelpDeskZ 1.0.2. The feature to a…7.5
- CVE-2020-26547Monal before 4.9 does not implement proper sender verificati…9.8
- CVE-2020-26548An issue was discovered in Aviatrix Controller before R5.4.1…8.8
- CVE-2020-26549An issue was discovered in Aviatrix Controller before R5.4.1…7.5
- CVE-2020-2655Vulnerability in the Java SE product of Oracle Java SE (comp…4.8
Are you affected by CVE-2020-26541?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST