How severe is CVE-2023-27971?

CVE-2023-27971 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-27971 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27971?

CVE-2023-27971 primarily affects Hp Laserjet Pro M304-m305 W1a46a Firmware. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-27971?

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

When was CVE-2023-27971 published?

CVE-2023-27971 was published on 2023-04-28 and last updated on 2026-06-25.

CVE-2023-27971

CVE-2023-27971 is a critical-severity vulnerability in Hp Laserjet Pro M304-m305 W1a46a Firmware with a CVSS 3.x base score of 9.8. 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Hp Laserjet Pro M304-m305 W1a46a Firmware
Published: 2023-04-28
Last modified: 2026-06-25

Description

Certain HP LaserJet Pro print products are potentially vulnerable to Buffer Overflow and/or Elevation of Privilege.

Frequently asked questions

What is CVE-2023-27971?: Certain HP LaserJet Pro print products are potentially vulnerable to Buffer Overflow and/or Elevation of Privilege.
How severe is CVE-2023-27971?: CVE-2023-27971 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-27971 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27971?: CVE-2023-27971 primarily affects Hp Laserjet Pro M304-m305 W1a46a Firmware. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-27971?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-27971 published?: CVE-2023-27971 was published on 2023-04-28 and last updated on 2026-06-25.

References

https://support.hp.com/us-en/document/ish_7919962-7920003-16/hpsbpi03839

Affected products (38)

cpe:2.3:o:hp:laserjet_pro_m304-m305_w1a46a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m304-m305_w1a47a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m304-m305_w1a48a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m304-m305_w1a66a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_93m22a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a51a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a52a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a53a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a56a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a57a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a58a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a59a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a60a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m404-m405_w1a63a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y40a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y41a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y43a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y44a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y45a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y46a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_m453-m454_w1y47a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a29a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a30a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a32a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a34a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a35a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_f_w1a38a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_w1a28a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_w1a31a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:laserjet_pro_mfp_m428-m429_w1a33a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a75a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a76a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a77a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a78a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a79a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a80a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a81a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hp:w1a82a_firmware:*:*:*:*:*:*:*:*

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