How severe is CVE-2022-31223?

CVE-2022-31223 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-31223 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31223?

CVE-2022-31223 primarily affects Dell Chengming 3900 Firmware. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-31223?

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

When was CVE-2022-31223 published?

CVE-2022-31223 was published on 2022-09-12 and last updated on 2026-06-17.

CVE-2022-31223

CVE-2022-31223 is a low-severity vulnerability in Dell Chengming 3900 Firmware with a CVSS 3.x base score of 2.3. 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-158.

Key facts

Severity: Low (CVSS 3.x base score 2.3)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-158
Affected product: Dell Chengming 3900 Firmware
Published: 2022-09-12
Last modified: 2026-06-17

Description

Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.

Frequently asked questions

What is CVE-2022-31223?: Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.
How severe is CVE-2022-31223?: CVE-2022-31223 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-31223 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31223?: CVE-2022-31223 primarily affects Dell Chengming 3900 Firmware. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-31223?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-31223 published?: CVE-2022-31223 was published on 2022-09-12 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000202196

Affected products (25)

cpe:2.3:o:dell:chengming_3900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_14_plus_7420_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_16_plus_7620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_3910_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_5320_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_5420_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_5620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_7420_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_7620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_3000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_3000_thin_client_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_5400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7000_oem_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:optiplex_7400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3460_small_form_factor_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_3660_tower_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:precision_5770_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:vostro_3710_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:vostro_3910_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:vostro_5320_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:vostro_5620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:vostro_7620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:xps_17_9720_firmware:*:*:*:*:*:*:*:*

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