NVD / CVE Program· CNA dell

CVE-2020-5326: Affected Dell Client platforms contain a BIOS Setup configuration authentication bypass vulnerability in the pre-boot Intel Rapid Storage Re

Noroxi assessment

Priority: Monitor (action score 21/100)

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: 0.34% (FIRST EPSS).
Physical access to the device is required. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

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

Affected Dell Client platforms contain a BIOS Setup configuration authentication bypass vulnerability in the pre-boot Intel Rapid Storage Response Technology (iRST) Manager menu. An attacker with physical access to the system could perform unauthorized changes to the BIOS Setup configuration settings without requiring the BIOS Admin password by selecting the Optimized Defaults option in the pre-boot iRST Manager.

MediumCVSS 5.3 · v3.1—No exploit No fix recorded

Auth bypass

Published: Feb 21, 2020
Updated: Jun 16, 2026
EPSS: 0.3% · 28th percentile
CWE: CWE-306

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 21 / 40 · 5.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CNA vs NVD score

NVD: 5.3
CNA · dell: 6.1; 0.8 point gap

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H

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

Is your version affected? Check it

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 help

Affected 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	chengming 3980 firmware	cpe:2.3:o:dell:chengming_3980_firmware
dell	chengming 3980	cpe:2.3:h:dell:chengming_3980
dell	g3 3579 firmware	cpe:2.3:o:dell:g3_3579_firmware
dell	g3 3579	cpe:2.3:h:dell:g3_3579
dell	g3 3590 firmware	cpe:2.3:o:dell:g3_3590_firmware
dell	g3 3590	cpe:2.3:h:dell:g3_3590
dell	g3 3779 firmware	cpe:2.3:o:dell:g3_3779_firmware
dell	g3 3779	cpe:2.3:h:dell:g3_3779
dell	g5 5587 firmware	cpe:2.3:o:dell:g5_5587_firmware
dell	g5 5587	cpe:2.3:h:dell:g5_5587
dell	g5 5590 firmware	cpe:2.3:o:dell:g5_5590_firmware
dell	g5 5590	cpe:2.3:h:dell:g5_5590

and 188 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

dell chengming 3980 firmwarebefore 2.13.0
dell embedded box pc 5000 firmwarebefore 1.6.0
dell g3 3579 firmwarebefore 1.10.0
dell g3 3590 firmwarebefore 1.4.3
dell g3 3779 firmwarebefore 1.10.0
dell g5 5587 firmwarebefore 1.11.1
dell g5 5590 firmwarebefore 1.8.0
dell g7 7588 firmwarebefore 1.11.1
dell g7 7590 firmwarebefore 1.8.0
dell g7 7790 firmwarebefore 1.8.0
dell inspiron 14 gaming 7466 firmwarebefore 1.5.0
dell inspiron 14 gaming 7467 firmwarebefore 1.10.0
dell inspiron 15 7572 firmwarebefore 1.2.1
dell inspiron 15 gaming 7566 firmwarebefore 1.5.0
dell inspiron 15 gaming 7567 firmwarebefore 1.10.0
dell inspiron 15 gaming 7577 firmwarebefore 1.8.0
dell inspiron 3470 firmwarebefore 2.13.0
dell inspiron 3480 firmwarebefore 1.5.1
dell inspiron 3481 firmwarebefore 1.4.0
dell inspiron 3580 firmwarebefore 1.5.1

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 Dell Client Consumer and Commercial Platforms
- https://www.dell.com/support/article/SLN320337affected

Same product

dell: all records

Other highest-scoring records for the same primary product.

CVE-2022-29083Prior Dell BIOS versions contain an Improper Authentication vulnerability.
27Monitor

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.

No history yet (it accumulates with the daily EPSS job).

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 researchers

Finders, 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).

Technical details

Attack conditions

Physical access to the device is required.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector: Physical
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

nvd-primary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team
2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {
2  app.post(
3    "/maintenance/reset",
4    requireSession, requireRole("admin"), resetDevice
5  );
6}

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)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.dell.com/support/article/SLN320337

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records