How severe is CVE-2021-3438?

CVE-2021-3438 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3438 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3438?

CVE-2021-3438 primarily affects Hp Color Laser 150 4zb94a. In total, 382 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3438?

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-2021-3438 published?

CVE-2021-3438 was published on 2021-05-20 and last updated on 2026-06-17.

CVE-2021-3438

CVE-2021-3438 is a high-severity vulnerability in Hp Color Laser 150 4zb94a 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Hp Color Laser 150 4zb94a
Published: 2021-05-20
Last modified: 2026-06-17

Description

A potential buffer overflow in the software drivers for certain HP LaserJet products and Samsung product printers could lead to an escalation of privilege.

Frequently asked questions

What is CVE-2021-3438?: A potential buffer overflow in the software drivers for certain HP LaserJet products and Samsung product printers could lead to an escalation of privilege.
How severe is CVE-2021-3438?: CVE-2021-3438 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3438 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3438?: CVE-2021-3438 primarily affects Hp Color Laser 150 4zb94a. In total, 382 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-3438?: 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-2021-3438 published?: CVE-2021-3438 was published on 2021-05-20 and last updated on 2026-06-17.

References

https://support.hp.com/us-en/document/ish_3900395-3833905-16

Affected products (382)

cpe:2.3:h:hp:color_laser_150_4zb94a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:color_laser_150_4zb95a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:color_laser_mfp_170_4zb96a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:color_laser_mfp_170_4zb97a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:color_laser_mfp_170_6hu08a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:color_laser_mfp_170_6hu09a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_100_209u7a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_100_4zb79a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_100_4zb80a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_100_4zb81a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_100_5ue14a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_408_7uq75a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb82a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb83a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb84a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb85a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb86a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb87a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb88a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb89a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb90a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb91a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb92a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_4zb93a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_5ue15a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_6hu10a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_6hu11a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_6hu12a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_130_9vv52a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laser_mfp_432_7uq76a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42523_7ab26a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42523_7zb25a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42523_7zb72a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42625_8af49a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42625_8af50a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42625_8af51a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m42625_8af52a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m433_1vr14a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m436_2ky38a:-:*:*:*:*:*:*:*
cpe:2.3:h:hp:laserjet_mfp_m436_w7u01a:-:*:*:*:*:*:*:*

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