CVE-2021-36322: Dell Networking X-Series firmware versions prior to 3.0.1.8 contain a host header injection vulnerability.
Noroxi assessment
Priority: Monitor (action score 24/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.85% (FIRST EPSS); higher than 58.2% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- According to the record, no fixed version is available yet.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Update when a fix is released; follow the vendor's advisory.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Dell Networking X-Series firmware versions prior to 3.0.1.8 contain a host header injection vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability by injecting arbitrary host header values to poison the web-cache or trigger redirections.
- Published
- Nov 19, 2021
- Updated
- Jun 16, 2026
- EPSS
- 0.8% · 58th percentile
- CWE
- CWE-20
Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 24 / 40 · 6.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.8%
CNA vs NVD score
- NVD
- 6.1
- CNA · dell
- 6.1
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- No fixed version yet
If any of these changes, we'll tell you in the daily email digest.
Running WordPress? Scan your site free with WP Lens
Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| dell | x1008p firmware | cpe:2.3:o:dell:x1008p_firmware |
| dell | x1008p | cpe:2.3:h:dell:x1008p |
| dell | x1018p firmware | cpe:2.3:o:dell:x1018p_firmware |
| dell | x1018p | cpe:2.3:h:dell:x1018p |
| dell | x1026p firmware | cpe:2.3:o:dell:x1026p_firmware |
| dell | x1026p | cpe:2.3:h:dell:x1026p |
| dell | x1052p firmware | cpe:2.3:o:dell:x1052p_firmware |
| dell | x1052p | cpe:2.3:h:dell:x1052p |
| dell | x4012 firmware | cpe:2.3:o:dell:x4012_firmware |
| dell | x4012 | cpe:2.3:h:dell:x4012 |
| dell | x1008 firmware | cpe:2.3:o:dell:x1008_firmware |
| dell | x1008 | cpe:2.3:h:dell:x1008 |
and 6 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- dell x1008 firmwarebefore 3.0.1.8
- dell x1008p firmwarebefore 3.0.1.8
- dell x1018 firmwarebefore 3.0.1.8
- dell x1018p firmwarebefore 3.0.1.8
- dell x1026 firmwarebefore 3.0.1.8
- dell x1026p firmwarebefore 3.0.1.8
- dell x1052 firmwarebefore 3.0.1.8
- dell x1052p firmwarebefore 3.0.1.8
- dell x4012 firmwarebefore 3.0.1.8
Versions reported by the vendor
Affected version ranges reported by the assigning authority (dell). Independent of NVD's CPE analysis and usually ahead of it.
Dell Networking X-Series
- unspecified and later · before 3.0.1.9affected
Same product
dell: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-36320Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an authentication bypass vulnerability.39Monitor
- CVE-2021-21507Dell EMC Networking X-Series firmware versions prior to 3.0.1.8 and Dell EMC PowerEdge VRTX Switch Module firmware versions prior to 2.0.0.839Monitor
- CVE-2021-36321Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an improper input validation vulnerability.30Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-21-0935 · Nov 22, 2021(Dell Güvenlik Zafiyeti)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.