EUVD-2026-56521
GHSA-2vr7-p3pm-fxwj
Severity by source
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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
Local-only vector and high privileges required per CVSS 4.0 source; no C/I impact confirmed; unchanged scope with low availability impact only.
Primary rating from Vendor (intel).
CVSS VectorVendor: intel
Lifecycle Timeline
1DescriptionCVE.org
Out-of-bounds write in the firmware for the Intel(R) Slim Bootloader may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable denial of service. 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 (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
AnalysisAI
Out-of-bounds write (CWE-787) in Intel Slim Bootloader firmware enables a denial of service condition on the local system. Exploitation requires a privileged local account and the presence of specific attack preconditions (AT:P per CVSS 4.0), and impact is confined to low availability on the vulnerable system with no confidentiality or integrity consequences. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all of the following simultaneously: (1) local access to the target system - the CVSS 4.0 AV:L metric confirms no remote exploitation path exists; (2) a high-privilege user account (PR:H per CVSS 4.0), meaning standard unprivileged or low-privileged user accounts cannot trigger the vulnerability; (3) specific attack requirements (AT:P) must be satisfied - the precise firmware state, configuration, or trigger input needed is not detailed in available descriptions beyond the AT:P designation, which confirms these conditions differ from a generic default-state attack. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The aggregate risk profile for this vulnerability is minimal across all available signal categories. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the firmware update provided by Intel through advisory INTEL-SA-01475 at https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01475.html; the exact patched build number is not independently confirmed from available intelligence and must be obtained directly from the advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
View allShare
External POC / Exploit Code
Leaving vuln.today