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CVE-2021-39238

36
FAUCET Score

CVE-2021-39238 is a critical buffer overflow vulnerability affecting numerous HP Enterprise LaserJet and PageWide printer models running FutureSmart firmware versions 3, 4, and 5. With a CVSS score of 9.8, this flaw allows unauthenticated remote attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability, requiring no user interaction. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community attention with four mentions and four media articles, indicating a high level of awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.9.8CPE matchmatch criteria
cpe:2.3:o:hp:futuresmart_3:*:*:*:*:*:*:*:*
< 4.11.2.1CPE matchmatch criteria
cpe:2.3:o:hp:futuresmart_4:*:*:*:*:*:*:*:*
< 5.3CPE matchmatch criteria
cpe:2.3:o:hp:futuresmart_5:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
12.13%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1213 is in the 92nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.hp.com / us-en/document/ish_5000383-5000409-16
Vendor Advisory