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CVE-2011-4161

37
FAUCET Score

CVE-2011-4161 describes a critical vulnerability in various HP LaserJet and Digital Sender products where the default Remote Firmware Update (RFU) setting is enabled. This allows unauthenticated remote attackers to execute arbitrary code by uploading a crafted firmware update via TCP port 9100. With a CVSS score of 10.0, this vulnerability presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:hp:color_laserjet_3000:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:hp:color_laserjet_3800:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:hp:color_laserjet_4700:*:*:*:*:*:*:*:*
mfpCPE matchmatch criteria
cpe:2.3:h:hp:color_laserjet_4730:mfp:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:hp:color_laserjet_4730_mfp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
13.89%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1389 is in the 94th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
Vendor Advisory
isc.sans.org / diary/Hacking+HP+Printers+for+Fun+and+Profit/12112
redtape.msnbc.msn.com / _news/2011/11/29/9076395-exclusive-millions-of-printers-open-to-devastating-hack-attack-researchers-say
secunia.com / advisories/47063
lists.immunityinc.com / pipermail/dailydave/2011-November/000378.html
kb.cert.org / vuls/id/717921
US Government Resource
securityfocus.com / bid/51324
securitytracker.com / id