CVE-2021-21510: dell idrac8_firmware Improper Input Validation
CVSS: 6.1v3.0MediumModified
Published 08-03-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-21510 is a medium (CVSS 6.1) Improper Input Validation vulnerability in dell idrac8_firmware. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.0 (CVE.org)EPSS score
1.03%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-03-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Dell iDRAC8 versions prior to 2.75.100.75 contain a host header injection vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability by injecting arbitrary ‘Host’ header values to poison a web-cache or trigger redirections.
CVSS metrics
4 scores · 2 sources · 3 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesSingle source
Medium 6.1Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- NVDNIST6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 5.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.03% on 19-09-2026
19-09-202619-10-2026
EPSS score1.03%
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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected systems
Dell2 products
- idrac8_firmware< 2.75.100.75
- integrated dell remote access controller (idrac)≥ unspecified, < 2.75.100.75
1 vendor · 2 products