Security readout for executives and security teams
Plain-English summary
Certain HP multifunction printers running HP Workpath solutions may be vulnerable to a denial-of-service condition. The CVSS score is critical, but the supplied description is sparse and does not confirm real-world exploitation. Organizations should identify exposed HP MFPs, confirm affected models through HP’s bulletin, and follow HP’s published guidance.
Executive priority
Prioritize this as a near-term infrastructure hygiene issue for printer fleets. Critical scoring warrants attention, but urgency should be driven by whether affected HP MFPs run Workpath and are reachable from untrusted or broad internal networks.
Technical view
CVE-2021-3821 affects certain HP MFPs using HP FutureSmart/Workpath solutions. The source description maps to CWE-400 and indicates potential denial of service. The provided CVSS vector is network-accessible, low complexity, unauthenticated, and no user interaction, but the public bundle does not provide exploit mechanics or detailed affected version data.
Likely exposure
Exposure is most likely where HP multifunction printers run HP Workpath solutions, especially if printer management or service interfaces are reachable from broad internal networks. Exact affected models and versions require HP bulletin verification.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. Treat exploit status as unconfirmed. The CVSS vector suggests remote unauthenticated reachability, but the sources provided do not include exploit details.
Researcher notes
Public details in the supplied bundle are limited. Avoid assuming confidentiality or integrity impact beyond the CVSS vector. The most important research task is mapping HP bulletin data to deployed models, versions, Workpath usage, and reachable printer services.
Mitigation direction
- Review HP Security Bulletin HPSBPI03747 for affected models, versions, and vendor remediation.
- Follow HP-published remediation only after confirming each device model and FutureSmart version.
- Inventory HP MFPs running Workpath solutions and prioritize externally or broadly reachable devices.
- Limit printer exposure to trusted administrative and application networks where operationally feasible.
Validation and detection
- Match deployed HP MFP models and FutureSmart versions against HP bulletin HPSBPI03747.
- Confirm whether HP Workpath solutions are installed or enabled on each potentially affected MFP.
- Verify remediation status using HP-supported firmware or configuration evidence.
- Check network access paths to printer management and service interfaces.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-3821 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.hp.com/us-en/document/ish_4980799-4980823-16/hpsbpi03747CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.