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CVE-2021-3942

No known exploitation. EPSS puts it in the 75th percentile. Fixed in 3.9.9.

CVSS 3.19.8CriticalEPSS percentile75th1.5% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix3.9.9Upgrade to this build

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Hp Color Laserjet Cm4540 Mfp Cc419a FirmwareAffected: ≥ 3.0, < 3.9.9Upgrade to: 3.9.9Stated by: NVD
  • Hp Color Laserjet Cm4540 Mfp Cc420a FirmwareAffected: ≥ 3.0, < 3.9.9Upgrade to: 3.9.9Stated by: NVD
  • Hp Color Laserjet Cm4540 Mfp Cc421a FirmwareAffected: ≥ 3.0, < 3.9.9Upgrade to: 3.9.9Stated by: NVD
  • Hp Color Laserjet Cm5525 Mfp Ce707a FirmwareAffected: ≥ 3.0, < 3.9.9Upgrade to: 3.9.9Stated by: NVD
  • Hp Color Laserjet Cm5525 Mfp Ce708a FirmwareAffected: ≥ 3.0, < 3.9.9Upgrade to: 3.9.9Stated by: NVD

Versions as the sources state them. 137 more products have version data. Full version matrix after sign-in

Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Certain HP Print products and Digital Sending products may be vulnerable to potential remote code execution and buffer overflow with use of Link-Local Multicast Name Resolution or LLMNR.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS75th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.5% chance of exploitation activity in the next 30 days, which ranks it in the 75th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 885 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Publishedweakness classified, att&ck mapped

Affected products

And 2693 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 9.8 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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