How severe is CVE-2022-27540?

CVE-2022-27540 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-27540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-27540?

CVE-2022-27540 primarily affects Hp Elitebook 745 G4 Firmware. In total, 354 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-27540?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2022-27540 have an EU (EUVD) identifier?

Yes. CVE-2022-27540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-32041.

When was CVE-2022-27540 published?

CVE-2022-27540 was published on 2024-06-28 and last updated on 2026-06-17.

CVE-2022-27540

CVE-2022-27540 is a high-severity vulnerability in Hp Elitebook 745 G4 Firmware with a CVSS 3.x base score of 7.8. 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-367.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-32041
Weakness: CWE-367
Affected product: Hp Elitebook 745 G4 Firmware
Published: 2024-06-28
Last modified: 2026-06-17

Description

A potential Time-of-Check to Time-of Use (TOCTOU) vulnerability has been identified in the HP BIOS for certain HP PC products, which might allow arbitrary code execution, denial of service, and information disclosure. HP is releasing BIOS updates to mitigate the potential vulnerability.

Frequently asked questions

What is CVE-2022-27540?: A potential Time-of-Check to Time-of Use (TOCTOU) vulnerability has been identified in the HP BIOS for certain HP PC products, which might allow arbitrary code execution, denial of service, and information disclosure. HP is releasing BIOS updates to mitigate the potential vulnerability.
How severe is CVE-2022-27540?: CVE-2022-27540 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-27540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-27540?: CVE-2022-27540 primarily affects Hp Elitebook 745 G4 Firmware. In total, 354 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-27540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2022-27540 have an EU (EUVD) identifier?: Yes. CVE-2022-27540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-32041.
When was CVE-2022-27540 published?: CVE-2022-27540 was published on 2024-06-28 and last updated on 2026-06-17.

References

https://support.hp.com/us-en/document/ish_10810714-10810745-16/hpsbhf03948

Affected products (354)

cpe:2.3:o:hp:elitebook_745_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_745_g5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_745_g6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_755_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_755_g5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_820_g3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_820_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_828_g3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_828_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_830_13.3_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_830_g5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_830_g6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_830_g7_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_830_g8_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_835_13_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_735_g6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_735_g5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_725_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_650_15.6_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_640_14_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_630_13_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_1050_g1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_1040_g4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_1040_g3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_1040_14_inch_g9_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_1030_g1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x360_1040_14_inch_g9_2-in-1_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_g8_tablet_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_g4_firmware:01.26.0:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_1013_g3_firmware:01.28.00:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_1012_g2_firmware:1.48:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_1012_g1_tablet_with_travel_keyboard_firmware:1.6:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_1012_g1_tablet_firmware:1.6:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_x2_1012_g1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_dragonfly_max_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_dragonfly_g2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_dragonfly_13.5_inch_g3_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elite_dragonfly_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:dragonfly_folio_13.5_inch_g3_2-in-1_notebook_pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:elitebook_835_g7_firmware:*:*:*:*:*:*:*:*

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