CVE-2023-26299

CVE-2023-26299 is a high-severity vulnerability in Hp 260 G4 Desktop Mini Firmware with a CVSS 3.x base score of 7.0. 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 7.0)
• EPSS exploit prediction: 0% (3rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-367
• Affected product: Hp 260 G4 Desktop Mini Firmware
• Published: 2023-06-30
• Last modified: 2026-06-17

Description

A potential Time-of-Check to Time-of-Use (TOCTOU) vulnerability has been identified in certain HP PC products using AMI UEFI Firmware (system BIOS), which might allow arbitrary code execution. AMI has released updates to mitigate the potential vulnerability.

Frequently asked questions

What is CVE-2023-26299?

A potential Time-of-Check to Time-of-Use (TOCTOU) vulnerability has been identified in certain HP PC products using AMI UEFI Firmware (system BIOS), which might allow arbitrary code execution. AMI has released updates to mitigate the potential vulnerability.

How severe is CVE-2023-26299?

CVE-2023-26299 has a CVSS 3.x base score of 7.0, 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-2023-26299 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26299?

CVE-2023-26299 primarily affects Hp 260 G4 Desktop Mini Firmware. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-26299?

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.

When was CVE-2023-26299 published?

CVE-2023-26299 was published on 2023-06-30 and last updated on 2026-06-17.

References

• https://support.hp.com/us-en/document/ish_8642715-8642746-16/hpsbhf03850

Affected products (59)

• cpe:2.3:o:hp:260_g4_desktop_mini_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:t430_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:t628_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:240_g10_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:245_g6_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:245_g7_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:245_g8_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:247_g8_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:250_g10_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:255_g10_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:349_g7_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:470_g10_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:470_g9_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:zhan_99_g2_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:zhan_99_g4_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:vr_backpack_g2_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:hp:200_g3_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:200_g4_22_all-in-one_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:200_pro_g4_22_all-in-one_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:205_g4_22_all-in-one_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:205_pro_g4_22_all-in-one_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g3_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g4_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g4_microtower_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g5_small_form_factor_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g6_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_g8_microtower_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_pro_g3_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_pro_g4_microtower_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:280_pro_g5_small_form_factor_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:282_g5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:282_g6_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:282_pro_g4_microtower_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:288_g5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:288_g6_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:288_pro_g4_microtower_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:290_g1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:290_g2_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:hp:290_g2_microtower_firmware:-:*:*:*:*:*:*:*

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