CVE-2021-21557: dell poweredge bios intel 15g Improper Input Validation
Vulnerability summary
CVE-2021-21557 is a high (CVSS 8.1) Improper Input Validation vulnerability in dell poweredge bios intel 15g. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 26.6% of scored vulnerabilities.
Timeline
- 14-06-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of service, arbitrary code execution, or information disclosure in System Management Mode.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.35%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
0.00 pp
From 0.35% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Dell32 products
- poweredge bios intel 15g≥ unspecified, < 2.11.2
- poweredge_c4140_firmware< 2.11.2
- poweredge_c6420_firmware< 2.11.2
- poweredge_c6525_firmware< 2.2.4
- poweredge_fc640_firmware< 2.11.2
1 vendor · 32 products