Security readout for executives and security teams
Plain-English summary
A vulnerable D-Link DWR-M961 router can let an unauthenticated remote attacker take complete control of the device. Successful exploitation runs attacker-supplied commands as root, potentially exposing traffic, changing configuration, disrupting connectivity, or using the router as a foothold. The issue is limited by the cited evidence to hardware revision C1 running firmware older than the identified fixed version.
Executive priority
Treat reachable affected routers as an immediate priority because compromise could provide root control of a network-edge device without credentials. Identify DWR-M961 C1 units, remove untrusted access, and install the vendor-approved firmware promptly. Prioritize externally reachable, remote-site, and business-critical devices first.
Technical view
CVE-2026-71951 is a CWE-78 command injection flaw in /boafrm/formIMEISetup. Unsanitized input supplied through IMEI_value can reach operating-system command execution with root privileges. Its CVSS 3.1 score is 9.8 because exploitation is network-accessible, low complexity, requires neither authentication nor user interaction, and can fully affect confidentiality, integrity, and availability.
Likely exposure
Exposure applies to DWR-M961 hardware version C1 with firmware earlier than 1.1.5_C1_202607071108. Risk is greatest where the affected interface is reachable from untrusted networks. The bundle does not establish whether the interface is exposed by default, so organizations must verify device configuration and network reachability.
Exploitation context
The supplied record does not identify this CVE as being in CISA KEV, and the cited material provides no confirmation of active exploitation. Nevertheless, unauthenticated network access, low attack complexity, root-level execution, and a 9.8 score make reachable vulnerable devices urgent remediation targets.
Researcher notes
The evidence identifies a direct command-injection sink in IMEI_value and root execution, but does not document affected subversions beyond the firmware boundary, default interface exposure, detection signatures, proof-of-concept availability, or observed attacks. Validate exposure non-destructively and avoid assuming other DWR-M961 hardware revisions are affected.
Mitigation direction
- Upgrade affected C1 devices to firmware 1.1.5_C1_202607071108 or newer vendor-approved firmware.
- Follow the D-Link advisory and verify the firmware package matches hardware revision C1.
- Restrict router management interfaces from internet and other untrusted network access until updated.
- Replace devices that cannot receive or reliably run the vendor-approved firmware.
Validation and detection
- Inventory DWR-M961 devices and record each hardware revision and installed firmware version.
- Confirm C1 devices run firmware 1.1.5_C1_202607071108 or newer.
- Verify the affected management interface is inaccessible from untrusted network segments.
- Review available device and network logs for suspicious requests to /boafrm/formIMEISetup.
- After updating, confirm configuration, connectivity, and access controls remain correct.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-71951 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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:H3.95.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- D-Link AdvisoryCVE reference, VulnCheck · vendor-advisory, patch
- Product WebpageCVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/d-link-dwr-m961-command-injection-via-boafrm-formimeisetupCVE reference, VulnCheck · third-party-advisory
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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.