CVE-2021-21574: dell alienware_m15_r6_firmware Stack-based Buffer Overflow
CVSS: 7.5v3.1HighModified
Published 24-06-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-21574 is a high (CVSS 7.5) Stack-based Buffer Overflow vulnerability in dell alienware_m15_r6_firmware. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 19.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
0.29%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-06-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:HSources2 sources · 7.2–7.5
- CVE.orgCNA7.2HighCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:HDiffers
Medium 6.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
0.00 pp
From 0.29% on 20-09-2026
20-09-202620-10-2026
EPSS score0.29%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Dell129 products
- alienware_m15_r6_firmware< 1.3.3
- biosconnect≥ unspecified, < Gen 11, Gen 10
- chengming_3990_firmware< 1.4.1
- chengming_3991_firmware< 1.4.1
- g15_5510_firmware< 1.4.0
1 vendor · 129 products