CVE-2026-20753
Last modified
CVE-2026-20753 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. Integer overflow in the UEFI firmware for the Slim Bootloader may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. EPSS estimates a 0.13% chance of exploitation in the next 30 days.
Description
Integer overflow in the UEFI firmware for the Slim Bootloader may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts.
Metrics
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | Slim Bootloader may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts. | See references |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-20753?
How severe is CVE-2026-20753?
How do I fix CVE-2026-20753?
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 2026
- CVE-2026-20748The WebSocket backend uses charging station identifiers to u…8.6
- CVE-2026-20749Out-of-bounds read for some Intel(R) PROSet/Wireless WiFi So…7.2
- CVE-2026-2075A security flaw has been discovered in yeqifu warehouse up t…8.8
- CVE-2026-20750Gitea does not properly validate project ownership in organi…9.1
- CVE-2026-20751Out-of-bounds read for the Intel(R) Data Center Graphics Dri…8.3
- CVE-2026-20752Improper authentication for some Intel(R) PROSet/Wireless Wi…6.7
- CVE-2026-20754Improper conditions check in some firmware for some Intel(R)…6.9
- CVE-2026-20755Protection mechanism failure for some LLM Scaler software wi…5.4
- CVE-2026-20757Improper Locking vulnerability (CWE-667) in Gallagher Morpho…2.5
- CVE-2026-20759OS Command Injection vulnerability exists in multiple Networ…8.8
- CVE-2026-2076A weakness has been identified in yeqifu warehouse up to aaf…8.8
- CVE-2026-20760Improper handling of overlap between protected memory ranges…6.8
Are you affected by CVE-2026-20753?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST