How severe is CVE-2023-28063?

CVE-2023-28063 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28063?

CVE-2023-28063 primarily affects Dell Optiplex 3000 Micro Firmware. In total, 291 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-28063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-28063 have an EU (EUVD) identifier?

Yes. CVE-2023-28063 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-31788.

When was CVE-2023-28063 published?

CVE-2023-28063 was published on 2024-02-06 and last updated on 2026-06-17.

CVE-2023-28063

CVE-2023-28063 is a medium-severity vulnerability in Dell Optiplex 3000 Micro Firmware with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-681.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-31788
Weakness: CWE-681
Affected product: Dell Optiplex 3000 Micro Firmware
Published: 2024-02-06
Last modified: 2026-06-17

Description

Dell BIOS contains a Signed to Unsigned Conversion Error vulnerability. A local authenticated malicious user with admin privileges could potentially exploit this vulnerability, leading to denial of service.

Frequently asked questions

What is CVE-2023-28063?: Dell BIOS contains a Signed to Unsigned Conversion Error vulnerability. A local authenticated malicious user with admin privileges could potentially exploit this vulnerability, leading to denial of service.
How severe is CVE-2023-28063?: CVE-2023-28063 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28063?: CVE-2023-28063 primarily affects Dell Optiplex 3000 Micro Firmware. In total, 291 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-28063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-28063 have an EU (EUVD) identifier?: Yes. CVE-2023-28063 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-31788.
When was CVE-2023-28063 published?: CVE-2023-28063 was published on 2024-02-06 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000214780/dsa-2023-176-dell-client-bios-security-update-for-a-signed-to-unsigned-conversion-error-vulnerability

Affected products (291)

cpe:2.3:o:dell:optiplex_3000_micro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_3000_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_3000_tower_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5000_micro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5000_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5000_tower_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_micro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_tower_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_xe_micro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5090_micro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5090_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5090_tower_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_micro_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_micro_plus_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_small_form_factor_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_small_form_factor_plus_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_tower_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_tower_plus_7010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_xe4_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_xe4_oemready_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3260_xe_compact_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3260_compact_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3460_xe_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3460_small_form_factor_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:alienware_m15_r6_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:alienware_m15_r7_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3901_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3911_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3910_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3990_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3991_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g15_5510_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g15_5511_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g15_5520_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g3_3500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g5_15_5590_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g5_5000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g7_15_7500_firmware:-:*:*:*:*:*:*:*

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