NVD / CVE Program· CNA hp

CVE-2021-3438: A potential buffer overflow in the software drivers for certain HP LaserJet products and Samsung product printers could lead to an…

HighCVSS 7.8 · v3.1—Proof of concept No fix recorded

Noroxi assessment

Priority: Monitor (action score 32/100)

Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 2.9% (FIRST EPSS); higher than 87.1% of all records.
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

Published: May 20, 2021
Updated: Jun 17, 2026
EPSS: 2.9% · 87th percentile
CWE: CWE-120

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.9%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
hp	color laser 150 4zb94a	cpe:2.3:h:hp:color_laser_150_4zb94a
hp	color laser 150 4zb95a	cpe:2.3:h:hp:color_laser_150_4zb95a
hp	color laser mfp 170 4zb96a	cpe:2.3:h:hp:color_laser_mfp_170_4zb96a
hp	color laser mfp 170 4zb97a	cpe:2.3:h:hp:color_laser_mfp_170_4zb97a
hp	color laser mfp 170 6hu08a	cpe:2.3:h:hp:color_laser_mfp_170_6hu08a
hp	color laser mfp 170 6hu09a	cpe:2.3:h:hp:color_laser_mfp_170_6hu09a
hp	laser 100 209u7a	cpe:2.3:h:hp:laser_100_209u7a
hp	laser 100 4zb79a	cpe:2.3:h:hp:laser_100_4zb79a
hp	laser 100 4zb80a	cpe:2.3:h:hp:laser_100_4zb80a
hp	laser 100 4zb81a	cpe:2.3:h:hp:laser_100_4zb81a
hp	laser 100 5ue14a	cpe:2.3:h:hp:laser_100_5ue14a
hp	laser 408 7uq75a	cpe:2.3:h:hp:laser_408_7uq75a

and 188 more

Versions reported by the vendor

Affected version ranges reported by the assigning authority (hp). Independent of NVD's CPE analysis and usually ahead of it.

n/a Certain HP LaserJet products and Samsung product printers, see Security Bulletin
- Various, see Security Bulletinaffected

Affected versions · NVD (20)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

hp color laser 150 4zb94aall versions
hp color laser 150 4zb95aall versions
hp color laser mfp 170 4zb96aall versions
hp color laser mfp 170 4zb97aall versions
hp color laser mfp 170 6hu08aall versions
hp color laser mfp 170 6hu09aall versions
hp laser 100 209u7aall versions
hp laser 100 4zb79aall versions
hp laser 100 4zb80aall versions
hp laser 100 4zb81aall versions
hp laser 100 5ue14aall versions
hp laser 408 7uq75aall versions
hp laser mfp 130 4zb82aall versions
hp laser mfp 130 4zb83aall versions
hp laser mfp 130 4zb84aall versions
hp laser mfp 130 4zb85aall versions
hp laser mfp 130 4zb86aall versions
hp laser mfp 130 4zb87aall versions
hp laser mfp 130 4zb88aall versions
hp laser mfp 130 4zb89aall versions

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	stars:0	2021-07-28
Proof-of-concept repository on GitHub	stars:1	2023-05-22

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedMay 20, 2021
First PoCJul 28, 2021+69 d
TodayNov 12, 2026+2003 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1char buf[256];
2memcpy(buf, pkt->data, pkt->len);

Fixed

1char buf[256];
2if (pkt->len > sizeof(buf)) {
3  return -EINVAL;
4}
5memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (0)

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records