Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability. A local malicious user with high Privileges may potentially exploit this vulnerability to perform arbitrary code execution or cause denial of service.
- Published
- Mar 16, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 10th percentile
- CWE
- CWE-119
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Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 6.7
- CNA · dell
- 7.5
- 0.8 point gap
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| dell | r6515 firmware | cpe:2.3:o:dell:r6515_firmware |
| dell | r6515 | cpe:2.3:h:dell:r6515 |
| dell | r7515 firmware | cpe:2.3:o:dell:r7515_firmware |
| dell | r7515 | cpe:2.3:h:dell:r7515 |
| dell | r6525 firmware | cpe:2.3:o:dell:r6525_firmware |
| dell | r6525 | cpe:2.3:h:dell:r6525 |
| dell | r7525 firmware | cpe:2.3:o:dell:r7525_firmware |
| dell | r7525 | cpe:2.3:h:dell:r7525 |
| dell | xe8545 firmware | cpe:2.3:o:dell:xe8545_firmware |
| dell | xe8545 | cpe:2.3:h:dell:xe8545 |
| dell | c6525 firmware | cpe:2.3:o:dell:c6525_firmware |
| dell | c6525 | cpe:2.3:h:dell:c6525 |
and 148 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- dell c4130 firmwarebefore 2.16.0
- dell c4140 firmwarebefore 2.16.1
- dell c6320 firmwarebefore 2.16.0
- dell c6420 firmwarebefore 2.16.1
- dell c6520 firmwarebefore 1.8.2
- dell c6525 firmwareall versions
- dell dss8440 firmwarebefore 2.16.1
- dell fc430 firmwarebefore 2.16.0
- dell fc630 firmwarebefore 2.16.0
- dell fc640 firmwarebefore 2.16.1
- dell fc830 firmwarebefore 2.16.0
- dell m630 firmwarebefore 2.16.0
- dell m630p firmwarebefore 2.16.0
- dell m640 firmwarebefore 2.16.1
- dell m640p firmwarebefore 2.16.1
- dell m830 firmwarebefore 2.16.0
- dell m830p firmwarebefore 2.16.0
- dell mx740c firmwarebefore 2.16.1
- dell mx750c firmwarebefore 1.8.2
- dell mx840c firmwarebefore 2.16.1
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 PowerEdge Platform
- 14G,15Gaffected
Same product
dell: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-34423
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
- CVE-2022-34422
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
- CVE-2022-34421
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
- CVE-2022-34420
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
- CVE-2022-34419
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
- CVE-2022-34418
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability.26Monitor
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-23-0157 · Mar 17, 2023(Dell Güvenlik Bildirimi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
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.