Buffer overflow in Dell BIOS on Dell Latitude D###, E####, XT2, and Z600 devices, and Dell Precision M#### devices, allows local users to by
Buffer overflow in Dell BIOS on Dell Latitude D###, E####, XT2, and Z600 devices, and Dell Precision M#### devices, allows local users to bypass intended BIOS signing requirements and install arbitrary BIOS images by leveraging administrative privileges and providing a crafted rbu_packet.pktNum value in conjunction with a crafted rbu_packet.pktSize value.
- Published
- Aug 28, 2013
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 85th percentile
- CWE
- CWE-119
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| dell | latitude d530 | cpe:2.3:h:dell:latitude_d530 |
| dell | latitude d531 | cpe:2.3:h:dell:latitude_d531 |
| dell | latitude d630 | cpe:2.3:h:dell:latitude_d630 |
| dell | latitude d631 | cpe:2.3:h:dell:latitude_d631 |
| dell | latitude d830 | cpe:2.3:h:dell:latitude_d830 |
| dell | latitude e4200 | cpe:2.3:h:dell:latitude_e4200 |
| dell | latitude e4300 | cpe:2.3:h:dell:latitude_e4300 |
| dell | latitude e5400 | cpe:2.3:h:dell:latitude_e5400 |
| dell | latitude e5500 | cpe:2.3:h:dell:latitude_e5500 |
| dell | latitude e6400 | cpe:2.3:h:dell:latitude_e6400 |
| dell | latitude e6400 atg | cpe:2.3:h:dell:latitude_e6400_atg |
| dell | latitude e6400 atg xfr | cpe:2.3:h:dell:latitude_e6400_atg_xfr |
and 10 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- dell latitude d530all versions
- dell latitude d531all versions
- dell latitude d630all versions
- dell latitude d631all versions
- dell latitude d830all versions
- dell latitude e4200all versions
- dell latitude e4300all versions
- dell latitude e5400all versions
- dell latitude e5500all versions
- dell latitude e6400all versions
- dell latitude e6400 atgall versions
- dell latitude e6400 atg xfrall versions
- dell latitude e6500all versions
- dell latitude xt2all versions
- dell latitude z600all versions
- dell precision m2300all versions
- dell precision m2400all versions
- dell precision m4300all versions
- dell precision m4400all versions
- dell precision m6300all versions
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).
Technical details
Attack conditions
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- High
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:N/AC:H/Au:N/C:C/I:C/A:C
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
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.kb.cert.org/vuls/id/912156
- www.kb.cert.org/vuls/id/BLUU-99HSLA
- www.blackhat.com/us-13/archives.html#Butterworth
Vendor advisories and official records. Exploit/PoC links are deliberately left out.